Need help with hacks?

Hey guys im trying to get this thing to work. I am not sure where to start. I wanted to be able to replace skin colors with colors like white and black. I know its possible because Nitro has it done. If anyone could help that would be amazing. thanks

u might go and check at HairStyles/Hair colors

or just make gold hack change skin get off the gold hack and the skin still work

See thats what i was trying but i have no clue on how to change it.