I'm glad to see this thread was resurrected, because an update to the costume and skin palettes are sorely needed.
The powers could as well, but i don't think it's as drastic of a need.
Basically, we have the 90s Marvel palette and just need 2000's DC.
Alternatively, RGB sliders like we have for in-game chat bubbles would be ideal.
Along with an option to temp/perm save colors.
(Keeping a standard palette available, too.)
Then i can make the tan colored character i was going to make before i came here to find this thread, because there is no 'tan'. 😃