Seeing this question [How do I get a Magenta Lightsaber Crystal?](https://gaming.stackexchange.com/questions/46369/how-do-i-get-a-magenta-lightsaber-crystal), I see that there are more lightsaber colors than I thought.

I know there are:

* Red
* Yellow
* Purple
* Green
* Blue
* Yellow + Dark center (preorder)

What else is there?