RadioButton change background color when checked - wpf

Question

I want to override a RadioButton style to look like ToggleButton one
<RadioButton Content="Point">
<RadioButton.Template>
<ControlTemplate>
<ToggleButton IsChecked="{Binding IsChecked, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay}"
Content="{Binding Content, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay}"/>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter Property="Background" Value="Red"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</RadioButton.Template>
</RadioButton>
I need to change the background color of the button when it's checked. I tried with the trigger but it's not working.

Answer 1

The solution is not a simple one. The issue is related to the fact that the togglebutton has a default background when it is checked, and that one has to be removed, before changing it to a different one.
Take a look at this topic: changing background color of togglebutton when checked
Here is the code that should do what you want (used this topic for reference remove blue highlight on buttons wpf):
<RadioButton Content="Point">
<RadioButton.Template>
<ControlTemplate>
<ToggleButton IsChecked="{Binding IsChecked, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay}"
Content="{Binding Content, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay}" Background="Transparent">
<ToggleButton.Style>
<Style TargetType="ToggleButton">
<Setter Property="OverridesDefaultStyle" Value="True"/>
<Setter Property="Margin" Value="5"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ToggleButton">
<Border Name="border"
BorderThickness="1"
Padding="4,2"
BorderBrush="DarkGray"
CornerRadius="3"
Background="{TemplateBinding Background}">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center" />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="border" Property="BorderBrush" Value="Black" />
</Trigger>
<Trigger Property="IsChecked" Value="true">
<Setter TargetName="border" Property="Background" Value="Red"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ToggleButton.Style>
</ToggleButton>
</ControlTemplate>
</RadioButton.Template>
</RadioButton>