+1

Comes in damn near every color of the rainbow, and most drug stores have cheap 99 cent varieties to choose from.

I just brush it on, but if you want to get anal here's a tip fom my car detailing days. Make sure the chip is cleaned of dirt/grease, and use a pointed toothpick to wick the nail enamel or paint into the chip cavity. Capillary action will do the work for you, and you'll end up with the chip crater being filled up with paint. Get enough in there to let it mound over (without spilling over), so that the paint blob is a bit higher than the surrounding area. Let it dry thoroughly. Now, take a standard pencil and glue a little circle of fine grit sandpaper to the eraser end. You can get really anal and use several pencils with several different grits. Carefully work the erasers over the mound until it is flush and blended in with the surrounding surface.

Hit it with a bit of polishing compound, and you're done.