I bought and used the Dr. Colorchip kit a few weeks back. I'm pleased with the results, as I didn't expect the results of a respray, but instead just wanted to get rid of the little white road rash dots that plague a black car.
Here's a picture of the hood. I've only done the right side in the picture, so I could compare it to the left. While not a great picture, I think you can see the difference. Hope that helps.