I completely agree with you, there was never any indication of Jedi blue or green (and sometimes purple if you whine enough) and Sith red. I know most people here seem to dislike the EU for the most part, but I always thought games like KOTOR or Jedi Knight 1, 2 and Academy, as well as the Tales of the Jedi comics always had a bit more of an OT feel to them when you would see a group of Jedi all with different coloured blades. In the PT we are stuck with only three colours
(4 but only 1 purple one ever. That honestly doesn't make sence at all either, do you have to be the head of the council to have a purple blade or something?) I really liked how MagFan made Duku's blade yellow, I have always thought the yellow blades looked really cool.

I agree with Paul and think that scenes like the area battle would look a lot cooler with more colours than just green and blue. But when reading discussions elsewhere regarding lightsabre colours, I seem to get the feeling many of us are content with the good = blue, green and bad = red.