I'm on it. Unfortunately Meta Knight is one of very few I haven't done the alt colours for yet. Props to MeleeMario64 for tagging me yesterday and reminding me this thread existed.
Anyway to remind people, since I've been gone so long, my re-colours for Brawl are almost finished (Dedede and MK are the only ones missing). Melee is missing Marth, Falco, Dr. M, and now Mewtwo. Sm4sh newcomers that aren't Alph haven't been done yet. My signature has a link to those I've done.
Also debuting Olimar and Sonic.
Also Karis. Because she's the only Golden Sun character that isn't Isaac that I've seen a 3Dish render of.