Heads up- once inserted color tiles don't want to come out again, I almost hurt myself.
You are going to set a Filament color change @ 135.2mm. Switch from black to whatever you want top tiles to be. Then add the 4 side color tiles. It doesn't have to be solved- make it 1 away to mess with people.
Main cube will need some supports, check out the 3mf for custom painted ones.
Use these with organic supports to make it as fast as possible. Holes on outside do not need support.