Personally, I think just about any attempt to touch up paint looks worse than the original chip or scratch itself. The previous owner of my Bridgestone used nail polish to obscure a couple booboos and it drives me nuts to look at. But I'm kind of one of those, "If I cant do it perfectly, I dont want to do it at all" people.
-sandy
Having said that, I know Leon Speakers up by the Ann Arbor Airport has a paint specialist who might be able to help make a match. I cant guarantee anything, but it might be worth a phone call.
-sandy