After reading this whole thread and nobody has useful information to say for sure about end game crystals. Decided to find my answer somewhere else. If you are like me and want a real answer to this question, here you go: http://dulfy.net/2012/05/07/endgame-color-crystals-post-1-2-and-how-to-obtain-them/

Just saying, Rachael Leigh Cook, is probably expensive to higher as a voice actor and if she is in the middle of shooting, it's not going to be easy to work with her to get correctly synced and satisfactory recordings. That said, I do believe Bioware made the mistake of not allowing this content, there is no real excuse. So, to all the readers, just some quick advice tips about Bioware. This is their first mmo, forgive the mistakes. Second, Bioware really doesn't listen to requests, and since working out a schedule for Rachael is probably very difficult, the request to have additional story content with her is, 99.99999%, not going to happen, unfortunately. What I suggest arguing for, is in the next expansion, add a companion who is marriable to the light side. And maybe add devorce, for those who need it . This is sounding more and more like mods on skyrim, haha.