I'd prefer the color corrected version because it was an error and not intended to be there. But then again I would like Vader's "white" lightsaber corrected when he is walking toward the closing bay door as that to was an obvious error that could have and should have been fixed in 1977.
PS: On a related note, there is a similar color change during the scene when R2D2 finds out the princess is on board the death star.