I have had good luck with the "paint pen" type of chip repair tool. Much easier and faster to use than the Posche touch up paint, and the color matched at least as well on my car.
I will say that I don't think I'm as meticulous about the outcome as tqtran is with the 0 brush and multiple layers, etc.
The pen I used is the "Auto Sharp Pen", web site at
www.autosharppen.com.