I have always wondered why people do not use the photos in the 1978 Star Wars Storybook for reference when doing color corrections . https://www.starwars.com/news/parenting-padawans-5-reasons-vintage-star-wars-storybooks-stand-the-test-of-time
Because those are production photos, not film stills.
^ really , they look like photos from the film , it even says full color photos from the film . although there is one in there that has Vader without his cape while " sensing a presence " that was probably a still . These pictures are very much the way I remember the film looking in the theater . I think some may be production photos but not all , but I have no proof , do you ?