I'm sort of surprised about the number of builders using spray can paint vs. powder coating. For me though, I'm not going to have very much panel space that is not covered by a display, so I'm thinking I can get away with it. The main panel has two G3Xs and an A/P controller; the two side "wings" are probably the largest "open" spaces, and there's only enough room on both for a few switches. Since there are already holes from former switches, I'm going to cover them over with new panel pieces and engraved with legends - or if I go with carbon vinyl - decals. For color, I think a very dark gray / charcoal, matte finish.