You're in luck. i found these codes myself and I'd like to share them.
Change Character's Sprite Color:
01??AFC1
Replace ?? with these:
00: doesn't change anything
01: Fire Mario
02: Luigi
03: Fire Luigi
04: Zombie Mario
05: Vampire Luigi
06: 100% Blue Mario
07: Phantom Luigi
08, 0F, and 15: Pink Luigi
09: Electric Luigi
0A & 17: Sunburnt Luigi
0B: Pink & Blue Mario
0C: Vampire Mario
0D: Doppleganger Mario
0E: Doppleganger Luigi
11: Zombie Luigi
12: Dark Luigi
13: Phantom Mario
14 & 19: 100% Pink Mario
16: Chocolate Luigi lol
18: Pink Phantom Luigi
All the rest are Fire Mario from what I checked. Enjoy your sprites!