Dude, Neo, a simple pallette swap would do that background well. Just make it like at night or something. Then we can focus on the character's actions, which as we know are ESSENTIAL TO A FIGHTER. We must be able to differentiate characters from one another.
That's actually kind of a problem with the roster aswell... There are like 10 hedgehogs, and maybe 5 characters whose primary color is black. That Radical Highway type stage you showed in a video was great, and was easy on the eyes too.