I simply suggest having the color crystal to be changed out like any standard saber. Then folks can modify it to any way they so desire.
If the picture indicates Revan's saber, then I imagine lots of Jedi (or later Sith) made very similar sabers. It doesn't necessarily have to be his, just one that is an exact replica. (After all, doesn't Revan have it with him in TOR?)
I need some assistance on a matter related to Brotherhood of Shadow: Solomon's Revenge. Please leave a comment on my BOS:ROS question here