@frank678: There were no LPP prints in '77, it was made in the 80s, probably for TV broadcast transfers, so it's very well likely its colourtiming could be different and even intentionally altered for telecine.

And don't you think it would be a bit weird that just exactly this scene from first frame of its first sot to last frame of last shot would be faded on the IB print?

Also, like I said, this stuff has already been discussed to death - it has been previously stated that due to the nature of the dye process, it's quite possible that the tech prints had slightly different colourtiming in some places than even '77 Eastman prints. But since all the surviving Eastman prints are faded, we may never know, so it's safer to adjust the colours to a print that we know looks like it did in 77.

@Sunday: Sorry if I've been a bit cross, you can imagine I'm a bit on edge :-) Yes, I did still leave it like that in my last WP and then I decided to change it in the end. That "adjusted" screenshot is really old and comes from before I had the reference scans.