Touch up paint.

[AKnowles]

I like these guys ...

Touch up Paint Kit - Express Paint

What I like (after you select your make/model/year) is you can buy a complete kit. The kit includes the clear coat you'll need to really match your paint. I really hate paint sticks. I have a few nicks ont he car now that were filled in with a paint stick. Less noticable sure, but there is a noticable hole where the missing paint is. There's quite a bit of filler, paint, clear coat above that bare metal on a Porsche.