WPF Hyperlink default style

Tried to find the default style of a Hyperlink and discovered that neither Google, nor Expression Blend or ShowMeTheTemplate have it. So I had to disassemble WPF assembly with .NET Reflector+BAML viewer. Here is the style for Aero NormalColor theme, just for reference purposes:

   <Style x:Key="{x:Type Hyperlink}" TargetType="{x:Type Hyperlink}">
        <Style.Triggers>
            <Trigger Property="IsMouseOver" Value="true">
                <Setter Property="Foreground" Value="Red" />
            </Trigger>
            <Trigger Property="IsEnabled" Value="false">
                <Setter Property="Foreground"
                       Value="{DynamicResource {x:Static GrayTextBrush}}" />
            </Trigger>
            <Trigger Property="IsEnabled" Value="true">
                <Setter Property="Cursor" Value="Hand" />
            </Trigger>
        </Style.Triggers>
        <Setter Property="Foreground" Value="Blue" />
        <Setter Property="TextDecorations" Value="Underline" />
    </Style>

Oh, a slight surprise for me was that the hyperlink colors are not bound to any SystemColor members. No, they are just Red and Blue nailed in the style. Why?....