Thank you, kind ferret.

Else if not just more colours, we can also have different shades of texture that visually look like different material types (wood, steel, chrome, obsidian, plastic, tissue paper, etc)

Pretty good idea

Maybe even custom particle effects. 50,000 credits for your mech to have green electric currents running through it with green Tron-like lights! Or for your stomp to have a fire or sonic explosion effect. Or perhaps even a taunt shop. Buy new taunts! Like teabagging. Or butt wiggling. Or a giant tongue sticks out of the mech. Or a special taunt like firing a baby pacifier at the enemy of having a crowd appear in the background and boo the opponent and cheer your side. Just ideas