/// <summary>

        /// 设置颜色动画

        /// </summary>

        /// <returns></returns>

        private SolidColorBrush ColorAnimation()

        {

            ColorAnimationUsingKeyFrames colorAnimation = new ColorAnimationUsingKeyFrames();

            colorAnimation.Duration = TimeSpan.FromSeconds(1);

            colorAnimation.FillBehavior = FillBehavior.Stop;

            colorAnimation.KeyFrames.Add(new DiscreteColorKeyFrame(Brushes.Red.Color, KeyTime.FromTimeSpan(TimeSpan.FromSeconds(0.5))));

            colorAnimation.KeyFrames.Add(new DiscreteColorKeyFrame(Brushes.Transparent.Color, KeyTime.FromTimeSpan(TimeSpan.FromSeconds(1))));

            colorAnimation.KeyFrames.Add(new DiscreteColorKeyFrame(Brushes.Red.Color, KeyTime.FromTimeSpan(TimeSpan.FromSeconds(1.5))));

            SolidColorBrush background = new SolidColorBrush();

            AnimationClock myClock = colorAnimation.CreateClock();

            background.ApplyAnimationClock(SolidColorBrush.ColorProperty, myClock);

            return background;

        }