ColorAnimation两个小例子

1.

 <StackPanel x:Name="stackpanel" Background="Red" Loaded="Start_Animation">
            <StackPanel.Resources>
                <Storyboard x:Name="colorStoryboard">
                    <ColorAnimation Storyboard.TargetName="stackpanel" Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)" From="Red" To="Green" BeginTime="0:0:0" Duration="0:0:4"/>
                </Storyboard>       
            </StackPanel.Resources>
</StackPanel>

C#

public void Start_Animation(object sender, EventArgs e)
{
            colorStoryboard.Begin();
}

2.

<StackPanel Loaded="Start_Animation">
            <StackPanel.Background>
                <SolidColorBrush x:Name="solidColorBrush" Color="Red"/>
            </StackPanel.Background>
            <StackPanel.Resources>
                <Storyboard x:Name="colorStoryboard">
                    <ColorAnimation BeginTime="0:0:0" Storyboard.TargetName="solidColorBrush" Storyboard.TargetProperty="Color" From="Red" To="Green" Duration="0:0:4"/>
                </Storyboard>
            </StackPanel.Resources>
</StackPanel>

C#

public void Start_Animation(object sender, EventArgs e)
{
            colorStoryboard.Begin();
 }