Paint Pen?
www.paintscratch.com
I haven't used them (so I didn't want to recommend them, but no one seemed to chime in for you), but they seem to offer a variety of DIY paint supplies to match OEM colors (pens, spray cans and even 1 gallon cans). From what I hear, they use pretty good paint. Make sure you get some clear coat also, if you want to do the job properly that is.....


