Every lightsaber color in the Star Wars universe. I think I'm either green or purple. Could be a pretty cool part of a sleeve.
Star Wars Lightsabers #Infographic
Alternate Lightsaber Techniques -- I think the Jedi Council needs to take some notes here.
The lightsabers are not explained in the movies and there are obvious scientific issues that may be unsolvable. Still, it's fun to consider the science behind these things.
I need this lightsaber! …
I don't understand a lick of this, but when I find someone who does..... world beware!