KRYLON paint-- available at your local Wal-Mart or K-Mart.

It's fuel proof and matches monkeykote pretty good.

Here's a tip for shake-n-shoot paint:

Put the can in a pan of hot tap water for about 15-20 minutes before you shoot. I try not to go over about 115 degrees F. Don't want a bomb going off in the shop!!

It heats up the paint and increases the pressure in the can. The heated paint gets thinner and comes out really nice with no splattering or blotches. The increased pressure in the can helps to atomize the paint when it comes out the nozzle.

Hope this helps out.