A surfboard prop I made as an environment asset. They all share the same tintable material that can be coloured via a mask.
Surfboards in game with colour tinted materials
Surfboad with base albedo
Zbrush sculpt
Masks that form an RGB composite texture to control colour tints in the material. The only thing to bear in mind when making something like this is anything non-tintable has to be omitted from all the masks (like the wax)