Ok, just about every website out there is touting these as the new, official lightsaber colors:
Anakin Skywalker: Blue. At a later point Green. Later wields both Blue and Green simultaneously.
Obi-Wan Kenobi: Blue. At a later point Green.
Mace Windu: Purple.
Yoda: Green.
Luminara Unduli: Green.
Barriss Offee: Blue.
Shaak-Ti: Blue.
Kit Fisto: Green.
Count Dooku: Red. At a later point wields Red and Blue simultaneously.
Well, we already KNEW he had one. Theres a scene in AOTC where he instructs young Jedi on the use of the lightsaber. The mystery was to the color. I was thinking that if Mace has purple, yoda would also have a new color, yellow, but it doesnt look that way. Mace's having purple and every one else having either blue or green would seem to indicate he IS the head of the council, not yoda. Maybe the purple saber is a special weapon, handed down from generation to generation of council leaders.