Quick question. I recently watched the Blu-ray for first time and only briefly dabbled in the 97 SE and 2004 DVDs. In ANH, when 3PO and R2 land on tatooine and are wandering around in the desert, it always seemed as though the sky was partly cloudy to overcast in most shots. Now the sky is blue. My question is, is the blue sky how it was originally shot, even if it was digitally enhanced? Is the blurry sky a result of fading filmstock/vhs/laserdisc/ect? Basically what I want to know is that, hypothetically, if old versions of the films were scanned/cleaned/adjusted and whatnot, would the sky be blue or more grey and/or overcast?