WPF Storyboard Animation Loops Forever Even After Being Set

The correct syntax to repeat N times is:

<Storyboard RepeatBehavior="Nx">

for example:

<Storyboard RepeatBehavior="6x">

Setting a duration value will also limit the repeat behavior as it takes precedence. So if you have repeat behavior set on the ColorAnimationUsingKeyFrames tag but on the storyboard you set a Duration="0:0:4" then the animation will only repeat for 4 seconds.