I’ve heard that the color timing on the blu rays of the movies (I-VI) is heavily altered from the original versions but I can’t find many examples of this. When I was watching them all some time after I got the set for Christmas, I noticed a lot of DNR on VI and the colors looked odd but I haven’t seen any other version so I have nothing to compare it to (except one film cell I have on my wall).
Some random examples
1 : https://www.youtube.com/watch?v=fnvrjMke-HM
2 : https://www.youtube.com/watch?v=D_s4ULn4yw8
6 : https://www.youtube.com/watch?v=NeGIlOUjkpQ