quote from http://www.mmo-champion.com/threads/1052403-Purple-color-clystals-color-crystals-list : "You can't remove the purple crystal from PVP sabers. In fact, you don't even have access to the crystal as those items aren't moddable. The colors I know exist in game are as followed: © for craftable © Red © Yellow © Green © Blue © Orange © Magenta Black-Yellow Black-Red Purple Light Blue The last few I've either seen, or seen the recipe to make them. My source is personal experience." By Phrixor