When Rocky was built his armor was made specifically to handle the suction of space and was colored to be camouflage against the zero gravity. He was built to battle Gravitron the space gangster and cuff him to bring him back to herofactory.
Sorry dude, not bad of a hero, and I honestly do like that he is all black, but like Omega said, gotta fallow the rules. The changes I would like to suggest is that you build him mostly of the contest colors, but use black as a secondary or accent color, so you can keep the mask. The potato masher like weapon is neat, maybe call it a boulder basher or something. Keep at it bro