I don't mean to keep shifting the topic away from the sound mix, but from what I can tell, the Blu-ray color timing seems closER to the 70mm print I saw at American Cinematheque. That was Halloween 2010, but I still specifically remember being surprised that the print looked closer to the Blu-ray than I expected it would.
Make no mistake, the Blu doesn't truly replicate the look of the original photochemical timing. I remember the 70mm print having more green than I expected, but the modern transfers do seem to take it even farther with the green/cyan cast. The modern transfer is also too bright, especially in the midtone range, and we already know the contrast is blown out, but I was still surprised at how that 1984 print looked more like the newer transfers than I ever thought it would.
Someone in the UK has a Derann 16mm print; this digital camera recording of a projection is too dark, and makes it look more yellow than it actually is (I believe LPP tends yellow-green?), but when I white-balanced the title, it looked closer to the new transfers than the old ones. The campus doesn't look as drab and low-contrast as the 1999 transfer, that's for sure.
Yes, I do think a retiming project using the Blu-ray would be great, especially combined with these sound mixes. If only we could get in contact with this guy who has the 16mm print, it could make a great color reference...