If you're trying to keep Sonic and the enemies' palettes correct, it'll probably be tricky considering the technical limitations. Off the top of my head, if you're up for some graphic hacking, you could give the Sonic sprites two seperate palettes/sprites, a la Megaman. Have the enemies set to the one palette (like, say, Sonic's shoes) then have a second palette for Sonic's body. If Sonic's sprites don't look good like this, then you'll probably have to redraw them.
On another note, if it's possible, you could re-route what palette set a particular graphic uses, so with the aformentioned setup, you could have the Buzz Bombers use the body palette for Sonic and the Crabmeats use the shoe palette, or even use coloring from the scenery if it's appropriate.[/quote]Actually, I am up to a no special or overcomplicated task: I just originally wanted to change a couple of bytes in Sonic the Hedgehog's ROM in order to make it start from Green Hill Zone. Or wait, I've changed my mind, I may actually do that on Hummer since that hack is actually little-known (I don't like Sonic nowadays anyway
). If Samuri 60-in-1 would be dumped once in a blue moon, then there might actually be a nice chance of that I may incorporate graphics from that gamepad's version of Somari.
Although in the above case, it would be a good (and a whole bunch easier for such an unexperienced romhacker like me) idea to actually swap the palettes between Sonic's body and shoes so at least the enemies wouldn't look so friggin' dark.