wpf Yuv Color Space

YuvColorSpaceWindow.xaml

<Window x:Class="Yuv.YuvColorSpaceWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        mc:Ignorable="d"
        Title="YuvColorSpace" Height="470" Width="450">
    <Grid>
        <Rectangle >
            <Rectangle.Fill>
                <VisualBrush TileMode="None">
                    <VisualBrush.Visual>
                        <Canvas Width="1" Height="1" SnapsToDevicePixels="True">
                            <Canvas.Background>
                                <LinearGradientBrush StartPoint="0,1" EndPoint="1,1">
                                    <LinearGradientBrush.GradientStops>
                                        <GradientStop Color="#FFFF5000" Offset="0" />
                                        <GradientStop Color="#FFFF00FE" Offset="1" />
                                    </LinearGradientBrush.GradientStops>
                                </LinearGradientBrush>
                            </Canvas.Background>
                            <Rectangle Width="1" Height="1" SnapsToDevicePixels="True">
                                <Rectangle.Fill>
                                    <LinearGradientBrush StartPoint="0,0" EndPoint="1,0">
                                        <LinearGradientBrush.GradientStops>
                                            <GradientStop Color="#FF00FF00" Offset="0" />
                                            <GradientStop Color="#FF00AFFF" Offset="1" />
                                        </LinearGradientBrush.GradientStops>
                                    </LinearGradientBrush>
                                </Rectangle.Fill>
                                <Rectangle.OpacityMask>
                                    <LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
                                        <LinearGradientBrush.GradientStops>
                                            <GradientStop Color="#FFFFFFFF" Offset="1"/>
                                            <GradientStop Color="#00FFFFFF" Offset="0"/>
                                        </LinearGradientBrush.GradientStops>
                                    </LinearGradientBrush>
                                </Rectangle.OpacityMask>
                            </Rectangle>
                        </Canvas>
                    </VisualBrush.Visual>
                </VisualBrush>
            </Rectangle.Fill>
        </Rectangle>
    </Grid>
</Window>