I'm sorry to dig this up again but I thought I'd add my two cents to the lightsaber color debate.

My thinking is that the color of a jedi's lightsaber is a way to indicate who taught them as a padawan. So Luke has green because Yoda has green. Anakin blue because Obiwan has blue. Granted Qui Gon's is green but since he's a more open minded Jedi, he would want his students to decide for themselves. Someone would have to add more purple sabers to show who Windu taught. So there you go - tradition without making it visually dull to watch or turning it into KoToR.

If you want to be really radical about it, make Qui Gon's red, as kind of a visual protest against the idea that color could really indicate a jedi's morality. Since Anakin could kill children without switching from blue, it could be a way to show how gray things were during this time period. I don't think any one will actually do this since it would be very confusing to the casual viewer. But these fan edits aren't really for casual fans.

Honestly, I can understand the argument of the old order insisting that everyone have blue, but would Luke care if everyone had green? I figure he just wanted to distance himself from his father, past and present.