My friends 66 is stripped to a mere shell, completely gutted, and we are going to paint it. I figure this is the perfect time to paint the interior with something other than the rattle can paint sold at the local mustang parts place. Is the black supposed to be flat black? semi-flat? gloss? or ? This is the doors and dash. I figured it would look great the have the vintage burgancy exterior color pointed in the interior as well, with white pony upholstery. My buddy didn't go for it, rats! Thanks for the advice.