xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Class="Microsoft.Samples.Graphics.RectangleExample" WindowTitle="Example"> Name="MyChangingColorText" Margin="20" Width="640" Height="100" FontSize="48" FontWeight="Bold"> This is changing color text Storyboard.TargetName="MySolidColorBrush" Storyboard.TargetProperty="Color" From="DarkOrange" To="SteelBlue" Duration="0:0:5" AutoReverse="True" RepeatBehavior="Forever" />