I've used red, white, black, yellow, blue, brown, and forest green, with good success. (FYI - Olive Drab is more like Forest Green) Normally I only waited about 2 or 3 days then flew. I used grey on the inside of a decathalon and had a tank leak that got 10% glow fuel all inside the cockpit area before I noticed it. During clean up, the grey paint just wiped off. The other colors did ok (on other planes) painted on fiberglass, ultracoat and solartex. No problems with the fuel. Later, I used the same grey on the bottom of a warbird but let it cure for about 3 weeks (mostly cause I couldnt get to it any earlier). Fuel had no affect on it. This was the bottom paint on the fuse and on the cowl with a pitts muffler pointed down. Didnt have any problems with the grey sticking on that. So I figured the extra wait time helped a lot. I've heard from others the clear is no good. I'm trying out warbird colors right now, like it a lot. The color pigment is very fine and there is a lot of it, covers real good. The rustoleum pigment is pretty course but still cover good and is a lot easier to apply in the rattle can. I havent tried rustoleum in my spray gun. The local lowes paint guy told me he could mix colors for me. We'll try that later on.
Edwin