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how to create the blue border on checkbox when mouse is over the containing element C# WPF

I have a WrapPanel containing a Label and a CheckBox. The idea is to make the Label and the CheckBox look like 1 element, so when the WrapPanel's MouseLeftButtonUp is fired (weather the event happens on the CheckBox, or the Label), the checkbox inside it becomes checked (or unchecked if it was already checked).
In WPF, when you move your mouse over a CheckBox it gets this blue border. i want it to happen when the mouse goes over any part of the WrapPanel (the Label or the CheckBox itself)
I tried to call the myCheckbox.Focus(); when the MouseEnter for the WrapPanel is fired, but didn't do the trick.
I also saw this link on how to make checkbox focus border apear when calling CheckBox.Focus(), but it didn't answer my question either.
Any help is appreciated.

Modify the template of the CheckBox to use a WrapPanel instead of the default Grid:
<CheckBox>
<TextBlock>Label that wraps with the CheckBox...</TextBlock>
<CheckBox.Style>
<Style TargetType="{x:Type CheckBox}">
<Style.Resources>
<Style x:Key="FocusVisual">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle Margin="2" StrokeDashArray="1 2" Stroke="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}" SnapsToDevicePixels="true" StrokeThickness="1"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="OptionMarkFocusVisual">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle Margin="14,0,0,0" StrokeDashArray="1 2" Stroke="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}" SnapsToDevicePixels="true" StrokeThickness="1"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<SolidColorBrush x:Key="OptionMark.Static.Background" Color="#FFFFFFFF"/>
<SolidColorBrush x:Key="OptionMark.Static.Border" Color="#FF707070"/>
<SolidColorBrush x:Key="OptionMark.Static.Glyph" Color="#FF212121"/>
<SolidColorBrush x:Key="OptionMark.MouseOver.Background" Color="#FFF3F9FF"/>
<SolidColorBrush x:Key="OptionMark.MouseOver.Border" Color="#FF5593FF"/>
<SolidColorBrush x:Key="OptionMark.MouseOver.Glyph" Color="#FF212121"/>
<SolidColorBrush x:Key="OptionMark.Pressed.Background" Color="#FFD9ECFF"/>
<SolidColorBrush x:Key="OptionMark.Pressed.Border" Color="#FF3C77DD"/>
<SolidColorBrush x:Key="OptionMark.Pressed.Glyph" Color="#FF212121"/>
<SolidColorBrush x:Key="OptionMark.Disabled.Background" Color="#FFE6E6E6"/>
<SolidColorBrush x:Key="OptionMark.Disabled.Border" Color="#FFBCBCBC"/>
<SolidColorBrush x:Key="OptionMark.Disabled.Glyph" Color="#FF707070"/>
</Style.Resources>
<Setter Property="FocusVisualStyle" Value="{StaticResource FocusVisual}"/>
<Setter Property="Background" Value="{StaticResource OptionMark.Static.Background}"/>
<Setter Property="BorderBrush" Value="{StaticResource OptionMark.Static.Border}"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type CheckBox}">
<WrapPanel x:Name="templateRoot" Background="Transparent" SnapsToDevicePixels="True">
<Border x:Name="checkBoxBorder" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="1" VerticalAlignment="{TemplateBinding VerticalContentAlignment}">
<Grid x:Name="markGrid">
<Path x:Name="optionMark" Data="F1 M 9.97498,1.22334L 4.6983,9.09834L 4.52164,9.09834L 0,5.19331L 1.27664,3.52165L 4.255,6.08833L 8.33331,1.52588e-005L 9.97498,1.22334 Z " Fill="{StaticResource OptionMark.Static.Glyph}" Margin="1" Opacity="0" Stretch="None"/>
<Rectangle x:Name="indeterminateMark" Fill="{StaticResource OptionMark.Static.Glyph}" Margin="2" Opacity="0"/>
</Grid>
</Border>
<ContentPresenter x:Name="contentPresenter" Focusable="False" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</WrapPanel>
<ControlTemplate.Triggers>
<Trigger Property="HasContent" Value="true">
<Setter Property="FocusVisualStyle" Value="{StaticResource OptionMarkFocusVisual}"/>
<Setter Property="Padding" Value="4,-1,0,0"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="Background" TargetName="checkBoxBorder" Value="{StaticResource OptionMark.MouseOver.Background}"/>
<Setter Property="BorderBrush" TargetName="checkBoxBorder" Value="{StaticResource OptionMark.MouseOver.Border}"/>
<Setter Property="Fill" TargetName="optionMark" Value="{StaticResource OptionMark.MouseOver.Glyph}"/>
<Setter Property="Fill" TargetName="indeterminateMark" Value="{StaticResource OptionMark.MouseOver.Glyph}"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Background" TargetName="checkBoxBorder" Value="{StaticResource OptionMark.Disabled.Background}"/>
<Setter Property="BorderBrush" TargetName="checkBoxBorder" Value="{StaticResource OptionMark.Disabled.Border}"/>
<Setter Property="Fill" TargetName="optionMark" Value="{StaticResource OptionMark.Disabled.Glyph}"/>
<Setter Property="Fill" TargetName="indeterminateMark" Value="{StaticResource OptionMark.Disabled.Glyph}"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="Background" TargetName="checkBoxBorder" Value="{StaticResource OptionMark.Pressed.Background}"/>
<Setter Property="BorderBrush" TargetName="checkBoxBorder" Value="{StaticResource OptionMark.Pressed.Border}"/>
<Setter Property="Fill" TargetName="optionMark" Value="{StaticResource OptionMark.Pressed.Glyph}"/>
<Setter Property="Fill" TargetName="indeterminateMark" Value="{StaticResource OptionMark.Pressed.Glyph}"/>
</Trigger>
<Trigger Property="IsChecked" Value="true">
<Setter Property="Opacity" TargetName="optionMark" Value="1"/>
<Setter Property="Opacity" TargetName="indeterminateMark" Value="0"/>
</Trigger>
<Trigger Property="IsChecked" Value="{x:Null}">
<Setter Property="Opacity" TargetName="optionMark" Value="0"/>
<Setter Property="Opacity" TargetName="indeterminateMark" Value="1"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</CheckBox.Style>
</CheckBox>

If you're open to an alternative (simpler) solution, This is how you should do it: define a custom style for the checkbox and override the Template so to get the WrapPanel and whatever controls you want look as part of the CheckBox..
<Style TargetType="{x:Type CheckBox}" x:Key="myCheckboxStyle">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type CheckBox}">
<WrapPanel>
<Label />
<!-- other Controls -->
<ContentPresenter/>
</WrapPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Apply the custom style to the checkbox
<CheckBox Style="{StaticResource myCheckboxStyle}" Content="Check Me"/>

How do I change the colour of a WPF Checkbox tick?

I would like to change the colour of the tick in my WPF CheckBox from black to white. I have tried to do this in the CheckBoxdeclaration as such:
<CheckBox Background="black" Foreground="White" BorderBrush="#262626"/>
The background and border successfully change, but not the tick itself.

You could copy the entire checkbox style from the MSDN server but because its very confusing to work with in the beginning of any WPF carreer, I compiled the (in my opinion) neccessary bits into one style thats a little easier to understand:
<Style TargetType="{x:Type CheckBox}">
<Setter Property="Background" Value="White" />
<Setter Property="BorderBrush" Value="#FF262E34"/>
<Setter Property="Foreground" Value="#FF262E34"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type CheckBox}">
<StackPanel Orientation="Horizontal" HorizontalAlignment="Stretch" >
<Border BorderBrush="{TemplateBinding BorderBrush}" Background="{TemplateBinding Background}" BorderThickness="{TemplateBinding BorderThickness}" Width="15" Height="15">
<!-- your color here -->
<Path Stretch="Uniform" Width="15" Height="10" Fill="HotPink" Name="eliCheck" Data="F1 M 9.97498,1.22334L 4.6983,9.09834L 4.52164,9.09834L 0,5.19331L 1.27664,3.52165L 4.255,6.08833L 8.33331,1.52588e-005L 9.97498,1.22334 Z " Visibility="Collapsed"/>
</Border>
<TextBlock Margin="5,0,0,0" VerticalAlignment="Center" Foreground="{TemplateBinding Foreground}" Text="{TemplateBinding Content}"></TextBlock>
</StackPanel>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="LightGray" />
</Trigger>
<Trigger Property="IsPressed" Value="True">
<Setter Property="Background" Value="#FF9C9E9F" />
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Background" Value="LightGray" />
<Setter Property="Foreground" Value="Gray" />
<Setter Property="BorderBrush" Value="Gray"/>
<Setter TargetName="eliCheck" Property="Opacity" Value="0.5" />
</Trigger>
<Trigger Property="IsChecked" Value="True">
<Setter TargetName="eliCheck" Property="Visibility" Value="Visible"></Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

The CheckBox control has various visual states with different colors for background, border and option mark glyph. You can refer to the documentation for the required parts and visual states.
If you want to edit the colors, you have to change the default style and control template. You can extract it using Blend or Visual Studio. Below is the default template. What you need to do is copy these resources to a resource dictionary in scope, e.g. the application resources and adapt the SolidColorBurshes.
<SolidColorBrush x:Key="OptionMark.Static.Background" Color="#FFFFFFFF"/>
<SolidColorBrush x:Key="OptionMark.Static.Border" Color="#FF707070"/>
<SolidColorBrush x:Key="OptionMark.Static.Glyph" Color="#FF212121"/>
<SolidColorBrush x:Key="OptionMark.MouseOver.Background" Color="#FFF3F9FF"/>
<SolidColorBrush x:Key="OptionMark.MouseOver.Border" Color="#FF5593FF"/>
<SolidColorBrush x:Key="OptionMark.MouseOver.Glyph" Color="#FF212121"/>
<SolidColorBrush x:Key="OptionMark.Pressed.Background" Color="#FFD9ECFF"/>
<SolidColorBrush x:Key="OptionMark.Pressed.Border" Color="#FF3C77DD"/>
<SolidColorBrush x:Key="OptionMark.Pressed.Glyph" Color="#FF212121"/>
<SolidColorBrush x:Key="OptionMark.Disabled.Background" Color="#FFE6E6E6"/>
<SolidColorBrush x:Key="OptionMark.Disabled.Border" Color="#FFBCBCBC"/>
<SolidColorBrush x:Key="OptionMark.Disabled.Glyph" Color="#FF707070"/>
<Style x:Key="FocusVisual">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle Margin="2"
SnapsToDevicePixels="true"
Stroke="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"
StrokeDashArray="1 2"
StrokeThickness="1" />
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="OptionMarkFocusVisual">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle Margin="14,0,0,0"
SnapsToDevicePixels="true"
Stroke="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"
StrokeDashArray="1 2"
StrokeThickness="1" />
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="CheckBoxStyle"
TargetType="{x:Type CheckBox}">
<Setter Property="FocusVisualStyle"
Value="{StaticResource FocusVisual}" />
<Setter Property="Background"
Value="{StaticResource OptionMark.Static.Background}" />
<Setter Property="BorderBrush"
Value="{StaticResource OptionMark.Static.Border}" />
<Setter Property="Foreground"
Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}" />
<Setter Property="BorderThickness"
Value="1" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type CheckBox}">
<Grid x:Name="templateRoot"
Background="Transparent"
SnapsToDevicePixels="True">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Border x:Name="checkBoxBorder"
Margin="1"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}">
<Grid x:Name="markGrid">
<Path x:Name="optionMark"
Margin="1"
Data="F1 M 9.97498,1.22334L 4.6983,9.09834L 4.52164,9.09834L 0,5.19331L 1.27664,3.52165L 4.255,6.08833L 8.33331,1.52588e-005L 9.97498,1.22334 Z "
Fill="{StaticResource OptionMark.Static.Glyph}"
Opacity="0"
Stretch="None" />
<Rectangle x:Name="indeterminateMark"
Margin="2"
Fill="{StaticResource OptionMark.Static.Glyph}"
Opacity="0" />
</Grid>
</Border>
<ContentPresenter x:Name="contentPresenter"
Grid.Column="1"
Margin="{TemplateBinding Padding}"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
Focusable="False"
RecognizesAccessKey="True"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="HasContent"
Value="true">
<Setter Property="FocusVisualStyle"
Value="{StaticResource OptionMarkFocusVisual}" />
<Setter Property="Padding"
Value="4,-1,0,0" />
</Trigger>
<Trigger Property="IsMouseOver"
Value="true">
<Setter TargetName="checkBoxBorder"
Property="Background"
Value="{StaticResource OptionMark.MouseOver.Background}" />
<Setter TargetName="checkBoxBorder"
Property="BorderBrush"
Value="{StaticResource OptionMark.MouseOver.Border}" />
<Setter TargetName="optionMark"
Property="Fill"
Value="{StaticResource OptionMark.MouseOver.Glyph}" />
<Setter TargetName="indeterminateMark"
Property="Fill"
Value="{StaticResource OptionMark.MouseOver.Glyph}" />
</Trigger>
<Trigger Property="IsEnabled"
Value="false">
<Setter TargetName="checkBoxBorder"
Property="Background"
Value="{StaticResource OptionMark.Disabled.Background}" />
<Setter TargetName="checkBoxBorder"
Property="BorderBrush"
Value="{StaticResource OptionMark.Disabled.Border}" />
<Setter TargetName="optionMark"
Property="Fill"
Value="{StaticResource OptionMark.Disabled.Glyph}" />
<Setter TargetName="indeterminateMark"
Property="Fill"
Value="{StaticResource OptionMark.Disabled.Glyph}" />
</Trigger>
<Trigger Property="IsPressed"
Value="true">
<Setter TargetName="checkBoxBorder"
Property="Background"
Value="{StaticResource OptionMark.Pressed.Background}" />
<Setter TargetName="checkBoxBorder"
Property="BorderBrush"
Value="{StaticResource OptionMark.Pressed.Border}" />
<Setter TargetName="optionMark"
Property="Fill"
Value="{StaticResource OptionMark.Pressed.Glyph}" />
<Setter TargetName="indeterminateMark"
Property="Fill"
Value="{StaticResource OptionMark.Pressed.Glyph}" />
</Trigger>
<Trigger Property="IsChecked"
Value="true">
<Setter TargetName="optionMark"
Property="Opacity"
Value="1" />
<Setter TargetName="indeterminateMark"
Property="Opacity"
Value="0" />
</Trigger>
<Trigger Property="IsChecked"
Value="{x:Null}">
<Setter TargetName="optionMark"
Property="Opacity"
Value="0" />
<Setter TargetName="indeterminateMark"
Property="Opacity"
Value="1" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Since there are different colors for the Static, MouseOver, Pressed and Disabled states, you might have to derive a small color palette from your background, border and foreground colors.
In order to use the adapted check box style, you can reference it explicitly by key:
<CheckBox Style="{StaticResource CheckBoxStyle}" />
You can also define an implicit style like below after the other resources, so the style will automatically be applied to all CheckBoxes in scope of the containing resource dictionary.
<Style TargetType="{x:Type CheckBox}" BasedOn="{StaticResource CheckBoxStyle}"/>
In this case you do not reference the style explicitly anymore.
<CheckBox />

Change BorderBrush when button IsPressed

I'm creating a WPF application for a touchscreen.
There should be a button on the screen with an Icon (image).
The code below shows how the button should look like.
So far so good..
What I would like to achieve is that when you press the button, the first BorderBrush color should change from “#0070b8” to “#00395c” and the second BorderBrush color should change from “#e3e3e3” to “#727272”.
Could someone please help me how to achieve this?
<Button Width="64" Height="64" Grid.Row="1" Margin="1,1" HorizontalAlignment="Left" VerticalAlignment="Top">
<Image Source="Resources\Home_Icon_2.bmp" Width="54" Height="54"></Image>
<Button.Style>
<Style TargetType="{x:Type Button}" >
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ButtonBase}">
<Border CornerRadius="6" Background="{TemplateBinding Background}" Name="button" Width="64">
<Grid>
<Border BorderThickness="0,0,2,2" BorderBrush="#0070b8" CornerRadius="{Binding ElementName=button, Path=CornerRadius}">
<Border.Effect>
<BlurEffect Radius="1" KernelType="Gaussian"/>
</Border.Effect>
</Border>
<Border BorderThickness="2,2,0,0" BorderBrush="#e3e3e3" Opacity="0.5" CornerRadius="{Binding ElementName=button, Path=CornerRadius}">
<Border.Effect>
<BlurEffect Radius="1" KernelType="Gaussian"/>
</Border.Effect>
</Border>
<ContentPresenter TextBlock.FontSize="{TemplateBinding FontSize}" TextBlock.FontFamily="{TemplateBinding FontFamily}" TextBlock.Foreground="{TemplateBinding Foreground}" VerticalAlignment="Center" HorizontalAlignment="Center" Content="{TemplateBinding Content}"></ContentPresenter>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsPressed" Value="True">
<Setter TargetName="button" Property="Background" Value="#e3e3e3" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="Background" Value="#c6c3c6" />
</Style>
</Button.Style>
</Button>

You could always set the brush color in your click event:
private void btnYourButton_Click(object sender, RoutedEventArgs e)
{
btnYourButton.BorderBrush = (Brush)new BrushConverter().ConvertFrom("#00395c");
}

This would be one solution. Note that we've assigned our brushes to separate resources so that we don't have magic numbers in our style. This is ideal for when you need to use the same colour scheme across multiple controls, and saves a lot of time when you want to change said colour scheme.
<Style x:Key="AdtakrButton" TargetType="Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Border Name="ButtonBorder" CornerRadius="5" BorderThickness="{DynamicResource AdtakrButtonBorderThickness}" BorderBrush="{DynamicResource AdtakrBlack}" Background="{DynamicResource AdtakrWhite}" Margin="{DynamicResource ButtonMargin}">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center" Margin="6,0,6,0" />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Foreground" Value="{DynamicResource AdtakrGrey2}"/>
<Setter Property="BorderBrush" Value="{DynamicResource AdtakrGrey2}" TargetName="ButtonBorder"/>
<Setter Property="Background" Value="{DynamicResource AdtakrGrey1}" TargetName="ButtonBorder"/>
<Setter Property="Visibility" Value="Collapsed"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="{DynamicResource AdtakrGrey2}" TargetName="ButtonBorder"/>
<Setter Property="BorderBrush" Value="{DynamicResource AdtakrGrey2}" TargetName="ButtonBorder"/>
</Trigger>
<Trigger Property="IsPressed" Value="True">
<Setter Property="Background" Value="{DynamicResource AdtakrLightBlue}" TargetName="ButtonBorder"/>
<Setter Property="BorderBrush" Value="{DynamicResource AdtakrLightBlue}" TargetName="ButtonBorder"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="FontSize" Value="{DynamicResource AdtakrDefFontSize}"/>
<Setter Property="MinWidth" Value="90"/>
<Setter Property="Height" Value="40"/>
<Setter Property="ToolTipService.ShowOnDisabled" Value="True"/>
</Style>
If you need to have it change between more than 1 colour, then your best bet is to have a command on your databound VM and the command changes a colour property that the button also binds to. Alternatively, if it's supposed to reflect 3 states, using a toggle button with the three state option is probably your better bet, as then you can set triggers against the IsChecked property of the button.

Found the solution!
By giving the borders a name and then they are accessible in the Trigger Property
<Button Width="64" Height="64" Grid.Row="1" HorizontalAlignment="Left" VerticalAlignment="Top">
<Image Source="Images\Home_Icon_2.png" Width="54" Height="54"></Image>
<Button.Style>
<Style TargetType="{x:Type Button}" >
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ButtonBase}">
<Border x:Name="button" CornerRadius="6" Background="{TemplateBinding Background}" Width="64">
<Grid>
<Border x:Name="border1" BorderThickness="0,0,2,2" BorderBrush="#0070b8" CornerRadius="{Binding ElementName=button, Path=CornerRadius}">
<Border.Effect>
<BlurEffect Radius="1" KernelType="Gaussian"/>
</Border.Effect>
</Border>
<Border x:Name="border2" BorderThickness="2,2,0,0" BorderBrush="#e3e3e3" Opacity="0.5" CornerRadius="{Binding ElementName=button, Path=CornerRadius}">
<Border.Effect>
<BlurEffect Radius="1" KernelType="Gaussian"/>
</Border.Effect>
</Border>
<ContentPresenter TextBlock.FontSize="{TemplateBinding FontSize}" TextBlock.FontFamily="{TemplateBinding FontFamily}" TextBlock.Foreground="{TemplateBinding Foreground}" VerticalAlignment="Center" HorizontalAlignment="Center" Content="{TemplateBinding Content}"></ContentPresenter>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsPressed" Value="True">
<Setter TargetName="button" Property="Background" Value="#e3e3e3" />
<Setter TargetName="border1" Property="BorderBrush" Value="#00395c" />
<Setter TargetName="border2" Property="BorderBrush" Value="#727272" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="Background" Value="#c6c3c6" />
</Style>
</Button.Style>
</Button>

WPF Change the Corner Radius of a Button while stilling using the default style of the Button

I'm trying to make a button with a square border but whenever I try to change the style of the button it removes the default styles related to it.
For example here I've found some code to remove the border and give it a similar look but it removes the triggers that animates the button when hovering over it.
<Style x:Key="SquareButton" TargetType="{x:Type Button}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border BorderBrush="{TemplateBinding BorderBrush}" CornerRadius="0" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" >
<ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
How do I change something about the default button style in this specific button without removing the default style?

So quick solution would be simply to overlap button with border control:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Button Margin="1" />
<Border BorderBrush="Red" CornerRadius="5" BorderThickness="2" Width="50" Height="20"/>
</Grid>
Provided approach would not allow you to stretch the radius too much since button borders would start sticking out.
Blend is powerful tool for customizing controls without even looking into code. You can simple create a control template and then edit code parts which you would like to modify.
Another more appropriate solution is to override default button template as such:
<Window.Resources>
<Style x:Key="FocusVisual">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle Margin="2" SnapsToDevicePixels="true" Stroke="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}" StrokeThickness="1" StrokeDashArray="1 2"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<SolidColorBrush x:Key="Button.Static.Background" Color="#FFDDDDDD"/>
<SolidColorBrush x:Key="Button.Static.Border" Color="#FF707070"/>
<SolidColorBrush x:Key="Button.MouseOver.Background" Color="#FFBEE6FD"/>
<SolidColorBrush x:Key="Button.MouseOver.Border" Color="#FF3C7FB1"/>
<SolidColorBrush x:Key="Button.Pressed.Background" Color="#FFC4E5F6"/>
<SolidColorBrush x:Key="Button.Pressed.Border" Color="#FF2C628B"/>
<SolidColorBrush x:Key="Button.Disabled.Background" Color="#FFF4F4F4"/>
<SolidColorBrush x:Key="Button.Disabled.Border" Color="#FFADB2B5"/>
<SolidColorBrush x:Key="Button.Disabled.Foreground" Color="#FF838383"/>
<Style x:Key="RoundedButtonStyle" TargetType="{x:Type Button}">
<Setter Property="FocusVisualStyle" Value="{StaticResource FocusVisual}"/>
<Setter Property="Background" Value="{StaticResource Button.Static.Background}"/>
<Setter Property="BorderBrush" Value="{StaticResource Button.Static.Border}"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="HorizontalContentAlignment" Value="Center"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="Padding" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border x:Name="border" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="true" CornerRadius="20">
<ContentPresenter x:Name="contentPresenter" Focusable="False" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsDefaulted" Value="true">
<Setter Property="BorderBrush" TargetName="border" Value="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="Background" TargetName="border" Value="{StaticResource Button.MouseOver.Background}"/>
<Setter Property="BorderBrush" TargetName="border" Value="{StaticResource Button.MouseOver.Border}"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="Background" TargetName="border" Value="{StaticResource Button.Pressed.Background}"/>
<Setter Property="BorderBrush" TargetName="border" Value="{StaticResource Button.Pressed.Border}"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Background" TargetName="border" Value="{StaticResource Button.Disabled.Background}"/>
<Setter Property="BorderBrush" TargetName="border" Value="{StaticResource Button.Disabled.Border}"/>
<Setter Property="TextElement.Foreground" TargetName="contentPresenter" Value="{StaticResource Button.Disabled.Foreground}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<Grid>
<Button x:Name="button" Content="Button" Width="50" Height="50" BorderThickness="1" Style="{DynamicResource RoundedButtonStyle}"/>
</Grid>
In style you can change BorderRadius and that will change your button rounding around the corners. This template was generated using Blend.

Styling ListView(for custom template) WPF

I have few questions about styling ListView. For example I have some style:
<Style x:Key="MyListView" TargetType="{x:Type ListView}">
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"/>
<Setter Property="BorderBrush" Value="{StaticResource ListBorder}"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Hidden"/>
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
<Setter Property="ScrollViewer.CanContentScroll" Value="false"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListView}">
<Border x:Name="PART_ControlBorder" SnapsToDevicePixels="true" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Padding="0">
<Grid>
<ScrollViewer Grid.Row="1"
VerticalScrollBarVisibility="Hidden"
HorizontalScrollBarVisibility="Hidden"
CanKeyboardScroll="False"
Padding="{TemplateBinding Padding}"
Focusable="false">
<ItemsPresenter x:Name="PART_ItemsPresenter" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</ScrollViewer>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="ItemTemplate">
<Setter.Value>
<DataTemplate>
<Border x:Name="ItemBorder" CornerRadius="4" SnapsToDevicePixels="true" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="2" Padding="1">
<Grid>
<TextBlock Text="{Binding Key}" Background="LightGray"/>
</Grid>
</Border>
</DataTemplate>
</Setter.Value>
</Setter>
<Setter Property="ItemContainerStyle">
<Setter.Value>
<Style TargetType="{x:Type ListViewItem}">
<Setter Property="HorizontalContentAlignment" Value="Stretch" />
<Style.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="Background" Value="{x:Null}" />
<Setter Property="BorderBrush" Value="{x:Null}" />
<Setter Property="Foreground" Value="Black" />
</Trigger>
</Style.Triggers>
</Style>
</Setter.Value>
</Setter>
</Style>
Why are setters for Backgroud and BorderBrush not working(ItemContainerStyle)? I had to hide selection using redefinition for system Brushes, but its wrong way:
<SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="#00000000"/>
How could I set BorderBrush for ItemBorder (on mouseOver event)?
How could I set BorderBrush for ItemBorder(only for selected Items)?
What shall I do to change default selection style?

I'd found answer by myself.
To set style for ItemBorder I had to create few DataTriggers and put them into DataTemplate:
<DataTemplate.Triggers>
<DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type ListViewItem}},Path=IsSelected}" Value="True">
<Setter TargetName="ItemBorder" Property="BorderBrush" Value="Lime"/>
</DataTrigger>
<DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type ListViewItem}}, Path=IsMouseOver}" Value="True">
<Setter TargetName="ItemBorder" Property="BorderBrush" Value="Orange"/>
</DataTrigger>
</DataTemplate.Triggers>
About question 1 and 4 I still haven't answer...(If I won't count way to change default system brushes)