Animates the text block's color

   
     
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="Microsoft.Samples.Graphics.RectangleExample"
    WindowTitle="Example">
  <Canvas>
      <TextBlock
        Name="MyChangingColorText"
        Margin="20" 
        Width="640" Height="100" FontSize="48" FontWeight="Bold">
        This is changing color text
        <TextBlock.Foreground>
          <SolidColorBrush x:Name="MySolidColorBrush" Color="Maroon" />
        </TextBlock.Foreground>

        <TextBlock.Triggers>
          <EventTrigger RoutedEvent="TextBlock.Loaded">
            <BeginStoryboard>
              <Storyboard>
                <ColorAnimation 
                  Storyboard.TargetName="MySolidColorBrush"
                  Storyboard.TargetProperty="Color"
                  From="DarkOrange" To="SteelBlue" Duration="0:0:5"
                  AutoReverse="True" RepeatBehavior="Forever" />
              </Storyboard>
            </BeginStoryboard>
          </EventTrigger>
        </TextBlock.Triggers>
      </TextBlock>

  </Canvas>
</Page>