I was wondering whether Anakin's Episode III Lightsaber is supposed to be Luke's Episode IV Lightsaber. In Episode III, after Anakin is defeated by Obi-Wan on Mustafar, Obi-Wan picks up and leaves with Anakin's Lightsaber. In Episode IV, when Luke goes to Obi-Wan's hideout, Obi-Wan gives Luke his "father's lightsaber," and told him that he (Anakin) wanted Luke to have it when he was old enough.
My question is - the color of the blade in Episode III is BLUE while the color fo the blade in Episode IV is GREEN. What gives? I'd rather not hear replies to the effect of, "it was housed for nearly 20 years so it gained some yellowish hue making it green." That wouldn't explain why Obi-Wan's lightsaber is blue when he fights Vader in Episode IV.
Sorry if this topic has been covered somewhere else. After all, this is a huge Star Wars forum.