public override IEnumerable <Timeline> CreateAnimation(FrameworkElement element)
{
var color = Colors.Aquamarine;
var brush = (SolidColorBrush)element.GetValue(Control.ForegroundProperty);
if (brush != null)
{
color = brush.Color;
}
return(new Timeline[]
{
element.AnimateColorProperty("(Control.Foreground).(SolidColorBrush.Color)")
.AddEasingKeyFrame(Duration * 0.25, Colors.Red)
.AddEasingKeyFrame(Duration * 0.5, Colors.Yellow)
.AddEasingKeyFrame(Duration * 0.75, Colors.Blue)
.AddEasingKeyFrame(Duration, color)
});
}
