Telion said:
OK, I hate to be a pain with constant posting of more problems but I’ve just been re-watching the Space Battle of Endor a few times and I’ve come up with a wonderfully unrealistic wish list of fixes.

The effects suffer from bad lighting and color shifts due to the way they were composed.
On top of that you have a terrible BlueRay grading that makes everything flat. Look at the original trailer.
The space scenes are much darker and look immediately better: https://youtu.be/p4vIFhk621Q?t=102

I think that the only thing fixable is grading. 1983 effects are what they are…