icarus/Icarus/CustomControls/CheckedImageRadioButton.xaml

<RadioButton x:Class="CheckedImageRadioButton"
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
   <RadioButton.Resources>
      <SolidColorBrush x:Key="RadioButton.MouseOver.Background" Color="White"/>
      <SolidColorBrush x:Key="RadioButton.MouseOver.Border" Color="#FF5593FF"/>
      <SolidColorBrush x:Key="RadioButton.Pressed.Background" Color="#afcfe9"/>
      <SolidColorBrush x:Key="RadioButton.Pressed.Border" Color="#FF3C77DD"/>
      <SolidColorBrush x:Key="RadioButton.Disabled.Background" Color="#FFE6E6E6"/>
      <SolidColorBrush x:Key="RadioButton.Disabled.Border" Color="#FFBCBCBC"/>
   </RadioButton.Resources>
   <RadioButton.Template>
      <ControlTemplate TargetType="{x:Type RadioButton}">
         <Border x:Name="RadioButtonBorder" 
                 CornerRadius="4" 
                 Background="{TemplateBinding Background}"
                 BorderBrush="{TemplateBinding BorderBrush}" 
                 BorderThickness="{TemplateBinding BorderThickness}" 
                 SnapsToDevicePixels="True">
            <Image x:Name="RadioButtonImage" 
                   Source="{Binding ImageSource, RelativeSource={RelativeSource AncestorType={x:Type ToggleButton}}}"
                   Stretch="Uniform"
                   Focusable="False"
                   HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" 
                   Margin="{TemplateBinding Padding}"
                   SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" 
                   VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
         </Border>
         <ControlTemplate.Triggers>
            <Trigger Property="IsMouseOver" Value="true">
               <Setter Property="Background" TargetName="RadioButtonBorder" Value="{StaticResource RadioButton.MouseOver.Background}"/>
               <Setter Property="BorderBrush" TargetName="RadioButtonBorder" Value="{StaticResource RadioButton.MouseOver.Border}"/>
            </Trigger>
            <Trigger Property="IsEnabled" Value="false">
               <Setter Property="Background" TargetName="RadioButtonBorder" Value="{StaticResource RadioButton.Disabled.Background}"/>
               <Setter Property="BorderBrush" TargetName="RadioButtonBorder" Value="{StaticResource RadioButton.Disabled.Border}"/>
            </Trigger>
            <Trigger Property="IsPressed" Value="true">
               <Setter Property="Background" TargetName="RadioButtonBorder" Value="{StaticResource RadioButton.Pressed.Background}"/>
               <Setter Property="BorderBrush" TargetName="RadioButtonBorder" Value="{StaticResource RadioButton.Pressed.Border}"/>
            </Trigger>
            <Trigger Property="IsChecked" Value="true">
               <Setter Property="Source" TargetName="RadioButtonImage" Value="{Binding CheckedImageSource, RelativeSource={RelativeSource AncestorType={x:Type ToggleButton}}}"/>
               <Setter Property="Background" TargetName="RadioButtonBorder" Value="{StaticResource Icarus_Gray}"/>
            </Trigger>
         </ControlTemplate.Triggers>
      </ControlTemplate>
   </RadioButton.Template>
</RadioButton>