OK, here's the report: Even though it was the '97 SE as expected, even though I was sitting in the 9th row and the tallest guy in the theater was sitting right in front of me, so I was in dire need of binoculars/periscope, it was still an amazing experience.

I noticed that Hoth was surprisingly white and Dagobah surprisingly blue but over-all, I'd say the colors in ESB v 2.0 are pretty good.

Going into more detail, Hoth was very white (actually almost yellowish) in the highlights and very blue in the shadows. Dagobah was pretty much blue/cyan tinted throughout. One other thing I noticed was that all the "empire shots" (abord Star Destroyers, AT-ATs) were distinctly teal-orange tinted. Another thing was that Vader's lightsaber was more orange that red and Luke's was pretty desaturated blue (with no hint of teal). And over-all, the freezing chamber shots were less saturated than I'd expect.

Another important thing I was watching out for were matte-boxes in non-recomped shots. I definitelly saw some because I was paying close attention and looking for them, so they are visible on 35mm prints, but they were nowhere near as obvious as on the BD and other home-video releases.

But we are talking about the '97 SE here and also the whole thing was clearly too dark (very little shadow detail to be seen), so I don't think the bulb brightness was quite right, so this is no definitive proof of anything, but I still made some interesting observations and I definitely had a good time :-)