Here’s a project where Star Wars fans have taken it upon themselves to bring back the original Star Wars movie experience from 1977. I admit to being a bit of a purist, but these guys have gone so far as to add back in odd light flashes that most likely were a mistake and even the color of the clouds behind the 20th Century Fox logo at the beginning. I would align myself to the camp that some of the changes made in the special edition re-release went way too far, especially the Jabba the Hut scene, which I thought looked awful. Maybe now that Disney controls this franchise they may be more agreeable to release an unaltered, original version of the film. For now you can find more info about the “restored” version here.
UPDATE: A new version in 4K is currently in the works, info here. Although the version above is created from various DVD and Laserdisc sources, this one claims to be from an original 35mm print.
In fact, there already is a version that was created from an original theatrical 35mm print called the Silver Screen version. I’ve embedded it below from archive.org