C# 填充/背景颜色改变时，WPF闪烁

我想有一个椭圆填充“闪光”（立即变成白色，然后返回到新的颜色）每当数据绑定填充颜色的变化。到目前为止，我得到的是：

<ctrls:NotifyEllipse Fill="{Binding Cluster.Brush, Converter={StaticResource CloneConverter}}" Width="10" Height="10" >
  <ctrls:NotifyEllipse.Style>
    <Style TargetType="{x:Type ctrls:NotifyEllipse}">
      <Style.Triggers>
        <EventTrigger RoutedEvent="ctrls:NotifyEllipse.FillChanged">
          <BeginStoryboard>
            <Storyboard AutoReverse="True">
              <ColorAnimation Storyboard.TargetProperty="(ctrls:NotifyEllipse.Fill).Color" To="White" Duration="0:0:1" />
            </Storyboard>
          </BeginStoryboard>
        </EventTrigger>
      </Style.Triggers>
    </Style>
  </ctrls:NotifyEllipse.Style>
</ctrls:NotifyEllipse>

---

加分：快速闪变为白色，不是立即闪变，而是保持原始颜色，直到达到全白色，然后慢慢从白色变为新颜色，这将是理想的解决方案，但我担心这将需要大量自定义动画代码。如上所述的闪光灯就足够了。

只需从

白色开始彩色动画即可：

<Storyboard>
    <ColorAnimation Storyboard.TargetProperty="Fill.Color"
                    From="White" Duration="0:0:1" />
</Storyboard>

就这么简单？我真的花了一天时间来解决这个问题。。。非常感谢
<Storyboard>
    <ColorAnimation Storyboard.TargetProperty="Fill.Color"
                    From="White" Duration="0:0:1" />
</Storyboard>

public class NotifyEllipse : Shape
{
    static NotifyEllipse()
    {
        FillProperty.AddOwner(typeof(NotifyEllipse), new FrameworkPropertyMetadata(
            (o, e) =>
            {
                if (e.NewValue != e.OldValue)
                {
                    ((NotifyEllipse)o).RaiseEvent(new RoutedEventArgs(FillChangedEvent));
                }
            }));
    }

    public static readonly RoutedEvent FillChangedEvent =
        EventManager.RegisterRoutedEvent(
            "FillChanged", RoutingStrategy.Bubble,
            typeof(RoutedEventHandler), typeof(NotifyEllipse));

    public event RoutedEventHandler FillChanged
    {
        add { AddHandler(FillChangedEvent, value); }
        remove { RemoveHandler(FillChangedEvent, value); }
    }

    protected override Geometry DefiningGeometry
    {
        get { return new EllipseGeometry(new Rect(RenderSize)); }
    }
}