This is one of my favorite color changes, originally published in my lecture notes a few years back and included on a couple other products. This is my take on Frank Garcia's Topper. Check it out, and check out it's applications, I hope you use it.
[video]https://www.youtube.com/watch?v=jjoI5T98bvg[/video]
[video]https://www.youtube.com/watch?v=jjoI5T98bvg[/video]