re: Random Fact Thread

In the first two Star Wars movies (Episodes IV and V), there were only two lightsaber colors. The Jedi used blue lightsabers, while Darth Vader used a red lightsaber. The last movie in the original trilogy, "Return of the Jedi", introduced the green lightsaber. The green lightsaber was used in this movie because a blue lightsaber didn't contrast enough against the blue sky in the fighting scenes on Tattoine.
In the prequel trilogy, both blue and green lightsabers were used by the Jedi equally. The exception is the purple lightsaber used by Mace Windu. This uniquely colored lightsaber was a request from Samuel L. Jackson, in order for him to accept the part as Mace Windu.