STOP that. Make some of the crystals themselves rare, but never make the colour rare. Statless colour crystals of every colour should be availiable for credits from a vendor on the fleet.
Amen to that. I really dislike when a basic aesthetic choice becomes something that's ultra rare and worth extorting other players over. I don't want a white crystal for uber stats, I don't play the game enough for that to matter, I simply like the color option