Just going off of what another member told me...he mixed his touch-up paint from the small bottles of model car paint until it matched the color of the bike. You of course would want to check the LBS to see if they have any matching paint of your bike if it is a newer bike. They may have touch-up paint from the manufacturer. He and I both have vintage Bianchi bikes so the color we are shooting for is Celeste. An example of his mixing was even amount of blue and green...then lightened up with white until it came to the color he was looking for. I just bought my model paint the other day at Hobby Lobby. Wish me luck.

I bought some purple spray paint that was very close to a grape colored Gitane Interclub I have and used it on the back seat stays. The results were not that bad...I did not have real high expectations because I knew no matter how hard I tried it would not match exactly. If you go at it like that more than likely you will be able to live with the results. If you think it looks bad afterward...might wanna save for a paint job or sand it and go at it again. I wish you luck!