I am getting back into the hobby after a 20+ year hiatus. I am currently building the fuselage of my LT Kadet 40 and had a question about fuel proofing.

The instructions call for painting the engine compartment with dope to serve as fuel proofing. I have read in this forum that it is best to epoxy the engine compartment. In addition to providing fuel proofing, it adds to the structural stability of the area. However, I would like the engine compartment to match the color scheme of the aircraft, so can I epoxy over the dope or dope over the epoxy?