toochilled tells us that Episode X has a report up on lightsaber colors in Episode II. It lists rumored colors for Luminara Unduli, Barriss Offee, Shaak-Ti, Kit Fisto and more. The color listed for Yoda is different than the Lego sets and toys we've seen early images of already, and different than word we heard about during production.

Lightsaber colors could change easily in post production, though at this point those things must be locked in as the film takes its final shape. It seems that Lucasfilm will release many different color saber toys, according to this archived June report as well.