Hey Everyone, I went ahead and painted up another one these Commander Class Megatrons, this time with two shades of non-buff metalizer metals, Old Silver for the main body armor and burnt iron for the secondary parts (upper uppers, thighs, hands, face, and back.
I also gave him a subtle burst effect in his purple main body areas and the rest of his purple apps are solid purple. He finally got a gloss sealant.
I put his head on a ball joint as well, since he's non-transforming. The last pic is just a reference shot.