This question always prevailed at the back of my mind. Does the lightsaber color hold any significance? Is the red beam more effective than the blue/green/purple beam or the other way round? Or is it just the normal wavelength physics of the plasma used in constructing?
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http://scifi.stackexchange.com/questions/1779/what-is-the-reason-that-lightsabers-have-different-colors
– Avias Feb 11 '13 at 05:53