If color match to the rest of the plane is important, i would go with latex. Stores like Home Depot can color match the paint to a sample you provide. If color match is not important i would use Krylon, it is easy to work with and provides a good finish from a rattle can. Also, i would use Krylon primer, it works very good as well and sands easy. It may take a couple of coats. I used Krylon primer on these parts http://www.rcuniverse.com/forum/fb.asp?m=11343043