I think one thing is being missed in the discussion of different transfers - the nature and generation of the versions.
GOUT - from a 1985 interpositive
97 SE - from a 1997 interpositive
35 mm - from a print (interpositve to internegative to print)
Tech IB - from a color separation and then a print
DVD and Blu-ray - directly from the faded negative in 2003
Interprositives are orangey. They require a color adjustment to render them into watchable colors. The type and level of orange can vary depending on film stock, though Star Wars should have been a very standard one. I was able to find a frame from each of these and you can see the generational difference in the deatils when the Stormtroopers burn through the Blockade Runner hatch. The 97 SE, DVD, and Blu-ray all have about the same level of detail. The GOUT has the most and the 35 mm the least. With each optical copy, the chance of color errors increases. If we are correcting the 35 mm to match the Tech IB, we are ignoring a generational difference. That could be why when matching some shots, others have come out too green.
But it also means that we have to take each version and its colors differently. We can’t assume that any of them were processed correctly. I don’t know of any transfers from the negative after 1985 that don’t have severe fading issues. The Tech IB is reported to have a green cast to it (likely due to the low budget science fiction nature of the film as well as the end of the Technicolor IB print era). The 35 mm prints are all faded or are copies. The home video transfers all share similar colors so it probably wasn’t an odd color correction for the GOUT - it probably was standard settings for the film stock.
If you are after the 1977 theatrical colors, I think the Tech IB prints are your best bet. The color should not have faded much at all. It probably doesn’t represent the 35 mm or 70 mm prints, but it is the best we have. I am not after the look of the original prints. I’m after the look of a presentation print struck directly off the negative. I want to see the colors as they were timed, not as they turned out on distribution prints. But I’ll take that 77 theatrical look because it is better than the Blu-ray.