After a few annoying leaks in back compartment and behind the front cab, I decided to clean the joints on the roof with a degreaser and re-seal with Dicor Lap Sealant. Unfortunately our coach is a grey'ish metalic colour and the Grey Lap Sealant is light gray.<br/>Has anyone had luck a) finding the paint code or b) painting it with automotive paint or c) taping it off and...