<Window x:Class="WpfApplication1.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="" Height="300" Width="300"> <Canvas> <TextBlock Text="Brush from Predefined Color [ .Fill = new SolidColorBrush(Colors.Green); ]"/> <Rectangle HorizontalAlignment="Left" Width="60" Height="20"> <Rectangle.Fill> <SolidColorBrush Color="Green"/> </Rectangle.Fill> </Rectangle> </Canvas> </Window>