Fyrosfreddy
You could .... but I'd have to smoke a lot of Zorai Thinking Moss and a few bottles of Stinga Rum to be in a mindset to waste the crystals on choice mats :().
There exist generic raw materials higher than choice class. I have some beige supreme.
However, I just say that white, red, blue and black are not the only option and it must be considered when someone suggest such type of limitation.