HandyControl/src/Shared/HandyControl_Shared/Themes/Styles/RadioButton.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:hc="clr-namespace:HandyControl.Controls">

    <Style BasedOn="{StaticResource RadioButtonBaseStyle}" TargetType="RadioButton"/>

    <Style x:Key="RadioButtonSameAsButtonDefault" BasedOn="{StaticResource RadioButtonSameAsButtonBaseStyle}" TargetType="RadioButton">
        <Setter Property="Background" Value="{DynamicResource RegionBrush}"/>
        <Setter Property="Foreground" Value="{DynamicResource PrimaryTextBrush}"/>
        <Style.Triggers>
            <Trigger Property="IsMouseOver" Value="True">
                <Setter Property="Background" Value="{DynamicResource SecondaryRegionBrush}"/>
            </Trigger>
            <Trigger Property="IsPressed" Value="True">
                <Setter Property="Background" Value="{DynamicResource BorderBrush}"/>
            </Trigger>
        </Style.Triggers>
    </Style>

    <Style x:Key="RadioButtonSameAsButtonDefault.Small" BasedOn="{StaticResource RadioButtonSameAsButtonDefault}" TargetType="RadioButton">
        <Setter Property="Height" Value="20"/>
        <Setter Property="Padding" Value="6,1"/>
        <Setter Property="hc:IconElement.Height" Value="12"/>
    </Style>

    <Style x:Key="RadioButtonSameAsButtonPrimary" BasedOn="{StaticResource RadioButtonSameAsButtonBaseStyle}" TargetType="RadioButton">
        <Setter Property="Background" Value="{DynamicResource PrimaryBrush}"/>
        <Setter Property="BorderBrush" Value="{DynamicResource PrimaryBrush}"/>
    </Style>

    <Style x:Key="RadioButtonSameAsButtonPrimary.Small" BasedOn="{StaticResource RadioButtonSameAsButtonPrimary}" TargetType="RadioButton">
        <Setter Property="Height" Value="20"/>
        <Setter Property="Padding" Value="6,1"/>
        <Setter Property="hc:IconElement.Height" Value="12"/>
    </Style>

    <Style x:Key="RadioButtonSameAsButtonSuccess" BasedOn="{StaticResource RadioButtonSameAsButtonBaseStyle}" TargetType="RadioButton">
        <Setter Property="Background" Value="{DynamicResource SuccessBrush}"/>
        <Setter Property="BorderBrush" Value="{DynamicResource SuccessBrush}"/>
    </Style>

    <Style x:Key="RadioButtonSameAsButtonSuccess.Small" BasedOn="{StaticResource RadioButtonSameAsButtonSuccess}" TargetType="RadioButton">
        <Setter Property="Height" Value="20"/>
        <Setter Property="Padding" Value="6,1"/>
        <Setter Property="hc:IconElement.Height" Value="12"/>
    </Style>

    <Style x:Key="RadioButtonSameAsButtonInfo" BasedOn="{StaticResource RadioButtonSameAsButtonBaseStyle}" TargetType="RadioButton">
        <Setter Property="Background" Value="{DynamicResource InfoBrush}"/>
        <Setter Property="BorderBrush" Value="{DynamicResource InfoBrush}"/>
    </Style>

    <Style x:Key="RadioButtonSameAsButtonInfo.Small" BasedOn="{StaticResource RadioButtonSameAsButtonInfo}" TargetType="RadioButton">
        <Setter Property="Height" Value="20"/>
        <Setter Property="Padding" Value="6,1"/>
        <Setter Property="hc:IconElement.Height" Value="12"/>
    </Style>

    <Style x:Key="RadioButtonSameAsButtonWarning" BasedOn="{StaticResource RadioButtonSameAsButtonBaseStyle}" TargetType="RadioButton">
        <Setter Property="Background" Value="{DynamicResource WarningBrush}"/>
        <Setter Property="BorderBrush" Value="{DynamicResource WarningBrush}"/>
    </Style>

    <Style x:Key="RadioButtonSameAsButtonWarning.Small" BasedOn="{StaticResource RadioButtonSameAsButtonWarning}" TargetType="RadioButton">
        <Setter Property="Height" Value="20"/>
        <Setter Property="Padding" Value="6,1"/>
        <Setter Property="hc:IconElement.Height" Value="12"/>
    </Style>

    <Style x:Key="RadioButtonSameAsButtonDanger" BasedOn="{StaticResource RadioButtonSameAsButtonBaseStyle}" TargetType="RadioButton">
        <Setter Property="Background" Value="{DynamicResource DangerBrush}"/>
        <Setter Property="BorderBrush" Value="{DynamicResource DangerBrush}"/>
    </Style>

    <Style x:Key="RadioButtonSameAsButtonDanger.Small" BasedOn="{StaticResource RadioButtonSameAsButtonDanger}" TargetType="RadioButton">
        <Setter Property="Height" Value="20"/>
        <Setter Property="Padding" Value="6,1"/>
        <Setter Property="hc:IconElement.Height" Value="12"/>
    </Style>

    <Style x:Key="RadioButtonIcon" BasedOn="{StaticResource RadioButtonIconBaseStyle}" TargetType="RadioButton"/>

    <Style x:Key="RadioButtonIcon.Small" BasedOn="{StaticResource RadioButtonIcon}" TargetType="RadioButton">
        <Setter Property="Height" Value="20"/>
        <Setter Property="Padding" Value="6,1"/>
        <Setter Property="hc:IconElement.Height" Value="12"/>
    </Style>

    <Style x:Key="RadioGroupItemDefault" BasedOn="{StaticResource RadioGroupItemBaseStyle}" TargetType="RadioButton"/>

    <Style x:Key="RadioGroupItemHorizontalFirst" BasedOn="{StaticResource RadioGroupItemBaseStyle}" TargetType="RadioButton">
        <Setter Property="hc:BorderElement.CornerRadius" Value="4,0,0,4"/>
        <Setter Property="Margin" Value="0"/>
    </Style>

    <Style x:Key="RadioGroupItemHorizontalLast" BasedOn="{StaticResource RadioGroupItemBaseStyle}" TargetType="RadioButton">
        <Setter Property="hc:BorderElement.CornerRadius" Value="0,4,4,0"/>
    </Style>

    <Style x:Key="RadioGroupItemSingle" BasedOn="{StaticResource RadioGroupItemBaseStyle}" TargetType="RadioButton">
        <Setter Property="hc:BorderElement.CornerRadius" Value="{StaticResource DefaultCornerRadius}"/>
    </Style>

    <Style x:Key="RadioGroupItemVerticalFirst" BasedOn="{StaticResource RadioGroupItemBaseStyle}" TargetType="RadioButton">
        <Setter Property="hc:BorderElement.CornerRadius" Value="4,4,0,0"/>
        <Setter Property="Margin" Value="0"/>
    </Style>

    <Style x:Key="RadioGroupItemVerticalLast" BasedOn="{StaticResource RadioGroupItemBaseStyle}" TargetType="RadioButton">
        <Setter Property="hc:BorderElement.CornerRadius" Value="0,0,4,4"/>
    </Style>
</ResourceDictionary>