gizzy2000 said:

I think the RMW looks more like the '97 SE than the blu ray

In terms of overall color balance, absolutely.

However, I don't think that color would be much of a factor when determining the origin of a particular element, as any scan of the original negative would require new colortiming, which could look like whatever they wanted it to look like. The area of interest to me would be the lightsaber effects, as these are the only parts of the shot which would need to be scanned from separate low quality (and thus probably more degraded) originals. If you look at the progression of Vader's saber from the GOUT to the RMW version, it gets progressively wider and blurrier. If the RMW shot was simply scanned from the SE interpositive made in '97, there would be no need to re-composite the lightsabers and Vader's saber would be as sharp as it is in the '97 screenshot. As it appears even more degraded than in the Blu-ray, the logical answer is that it couldn't possibly be a simple scan of the '97 SE.

Short answer: A '97 SE scan would have identical lightsabers to the '97 screenshot. They don't, so it's not a scan of the '97 print.