<phone:PhoneApplicationPage.Resources>
<Storyboard x:Name="Storyboard1">
<ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(TextBlock.Foreground).(SolidColorBrush.Color)" Storyboard.TargetName="textBlock">
<EasingColorKeyFrame KeyTime="0:0:2.5" Value="Red"/>
<EasingColorKeyFrame KeyTime="0:0:5" Value="Blue"/>
<EasingColorKeyFrame KeyTime="0:0:7.5" Value="Red"/>
<EasingColorKeyFrame KeyTime="0:0:10" Value="White"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
</phone:PhoneApplicationPage.Resources>