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Hello chaoticnuketral,

good question, simple answer: it depends. I've improved the ruling by the following requirement:

"a square should consist only of a single colour at a given time."

So if you're using 3D objects it is totally fine, as long each square has only one colour at a given time. So no gradients, multi-coloured textures or rotations are allowed. 

Oh, okay. Thank you.