I believe that you have just to make some works' color to your object!
Say Blue for the rough surface, other color(s) for all special surfaces...
and then your 3D Print (?) will follow these colors for each different material you want...
Hi Mala, yes it would be best to discuss this with the mold maker, it's not very feasible to try and directly model that type of bumpy surface in a CAD program.
