Larry,
I gave up on the Ultracote paint---it took days to almost dry and wasn't even close to being fuel resistant, much less fuel proof.
I think you will find Top Flite Lustercoat paint much better stuff. The Lustercoat Missle Red is a very close match to UltraCote Flame Red----not perfect, but very close. I mixed some Sig Light Red and some Sig Lemon Yellow dope to match the Ultracote Flame Red, but the Lustercote works very well.
Cheers,
Jim
Edit to add: No intent to bash Horizon products; I like Ultracote covering much better than Monocote covering......