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 ?
Some of them certainly are photos from the film, maybe someone could order copies of the books in the best condition possible and scan certain pages, then use DrDres color tool to match them.