From ProjectMayhem Wiki
You must have a global rank to change your skin.
|Spaz||Custom Skin,Oak wood, Gold ore, Yellow Wool, White Wool, White Glass, Yellow Glass, White Clay, Yellow Clay,|
|Crazy||Cobblestone, Pink Wool, Magenta Wool, Magenta Glass, Pink Glass, Magenta Clay, Pink Clay, Hay, Test|
|Maniac||Lapis Ore, Lapis Block, Light Blue Wool, Blue Wool, Cyan Wool, Diamond Ore, Diamond Block, Light Blue Glass, Blue Glass, Cyan Glass, Blue Clay, Cyan Clay, Light Blue Clay|
|Insane||Leaves, Lime Wool, Green Wool, Bricks, Lime Glass, Green Glass, Emerald Ore, Emerald Block, Lime Clay, Green Clay, Slime|
|Mayhem||Sponge, Light Grey Wool, Grey Wool, Orange Wool, Purple Wool, Brown Wool, Red Wool, Black Wool, Orange Glass, Pumpkin, Grey Glass, Light Grey Glass, Purple Glass, Brown Glass, Red Glass, Black Glass, Orange Clay, Purple Clay, Light Grey Clay, Grey Clay, Brown Clay, Red Clay, Black Clay|
|Mayhem+||Note Block, Rainbow Wool, Nether, TNT, Rainbow Glass, Rainbow Clay|