<ControlTemplate x:Key="btnTpl" TargetType="RadioButton">

    <StackPanel Orientation="Vertical" Height="30" Background="Transparent">

        <Border Name="border" Background="#006AB8" Height="25">

            <ContentPresenter Name="contentPre" VerticalAlignment="Center" HorizontalAlignment="Center" TextElement.Foreground="#FFF" TextElement.FontSize="12" Margin="0"/>

        </Border>

        <Path x:Name="path" HorizontalAlignment="Center" VerticalAlignment="Center" Data="M 0 0 L 6 4 L 12 0 Z">

            <Path.Fill>

                <SolidColorBrush Color="#006AB8" />

            </Path.Fill>

        </Path>

    </StackPanel>

    <ControlTemplate.Triggers>

        <Trigger Property="IsMouseOver" Value="True">

            <Setter TargetName="border" Property="Margin" Value="2 2 2 0"></Setter>

            <Setter TargetName="border" Property="Height" Value="23"></Setter>

            <Setter Property="TextElement.FontSize" Value="11"></Setter>

        </Trigger>

        <Trigger Property="IsChecked" Value="true">

            <Setter TargetName="border" Property="Border.Background" Value="#15BDF7"></Setter>

            <Setter TargetName="path" Property="Fill" >

                <Setter.Value>

                    <SolidColorBrush Color="#15BDF7" />

                </Setter.Value>

            </Setter>

        </Trigger>

    </ControlTemplate.Triggers>

</ControlTemplate>