ben_danger said:
it would be kinda cool having yoda as purple, then it would be like the three purple sabers all fail to stop sidious.

Except that I completely removed the Yoda/Sidious duel from the film. ;)

Still, this might be an idea worth pursuing - yes, I know some people hate purple lightsaber, but since Yoda and Mace share a similar position on the Council, there should be some visual signifier as to their rank and the lightsaber color would work to that effect (the biggest question that I always had with AotC and RotS was why was Mace's lightsaber the only one that was purple; if Yoda, Mace, and Dooku all shared a similar high position on the Council, then maybe their lightsabers should have the same color)