Actually, I saw a 35mm of TWOK last night, and the color is not exactly like the HDTV master (or at least the theatrical cut copy I have). Nowhere near as cool as the Blu-ray, to be sure, but the HDTV (or again, at least the theatrical cut copy I have) seems too neutral and too pink, if that makes any sense. The print I had kind of had the blue/teal/orange thing going without looking digitally tweaked or overly cool. It still looked familiar enough to me, I didn't think "wow, this looks different from the transfers I've seen", I thought "wow, this really does look very much like the pre-Blu transfers."
The Enterprise bridge walls always looked a kind of olive-umber, a bit green and a little brown. And I know that the decorative panels in the turbolift were more saturated olive-green than the non-Blu HD copy I have. The uniforms sometimes had a little bit of orange in them, tending more toward burnt sienna/burnt umber than the scarlet red they take on in the pre-Blu HD transfers I've seen. (Though it depended on how much each shot tended toward orange, I know other shots had a more maroon red with less orange.) The blue lights on some of the bridge consoles sometimes looked distinctly cyan-teal, and the main room of Regula One often had a blue/orange thing going. And I distinctly noticed that the medical bay scene (Preston's death) had kind of a golden yellow tinge going on. I hope I'm not going too far into color theory, I'm not sure if I'm good enough at explaining it.
Actually, if anybody has seen the preview of the 35mm scan of Star Trek III, the coloring of the clips of the ending of II in the prologue look very close to how those same scenes looked on the print of II I just saw. I kept thinking back to the blue/orange look of that 35mm scan of III (the Blu of II has its own blue/orange dichotomy at times, but not the same kind as the print in any way). Even though this print of II must have been struck fairly recently, it still looked like an 80s movie.
(Has anybody else here seen II in 35mm and can recall the colors they noticed?)
But I do need to check out the 1080i Director's Cut rip - if it's Sky, I guess it's the source of the other 720p MKV I used to have? (A couple years ago, I replaced it with the theatrical-cut 720p copy I have now, for reasons I don't remember. Maybe I thought I only needed one? I honestly had not realized my previous copy wasn't also the theatrical, maybe I assumed it was a separate downconvert of the same source?)