I dont know why I didnt mention this before, but I have used epoxy paint for appliances to good effect in the past. I first painted a muffler black with this appliance paint, and the paint is still intact. I put some 25% nitro fuel on it after it ahd dried, and the paint did not even soften.
The down side is that it is heavy, and I have only found three colors: black, white and biege.
The good thing is that it only takes a minimum number of coats to cover.
I would not use this on a contest plane, but for a practice plane or a kids trainer, it should be great.
So if you think black, white or biege is a color you want to use, try it, oyu might like it.
Greg