I just finished it, too. It looks pretty good, though I noticed something weird at 32:19 - 32:20. The purplish tone switches suddenly to tealish. Also, in the first dinner/kitchen scene, some skin tones look as if the crew suffered from liver failure. And finally, a couple shots seamed almost monochromatic or black and white, like Ash running to get warmer or the outside shot of the [i]Nostromo[/i] taking off. Maybe all that is supposed to be that way, it’s just some stuff I noticed while watching it.
I’ve watched it with the “new” rare 5.1 audio track. Sounds pretty cool. Some lines were missing when they investigate the alien ship. I noticed that because it was subtitled anyway. And the line “Kane’s son” is barely audible.
All in all, thanks. It was nice to see it that way.
The blues in the LD range from a light powder blue (Nostromo taking off) to a deep purplish blue (detonation of the ship) and it can vary between the two like the egg scene. So that is right or at least consistent to the LD. Particular to the Nostromo taking off, the BD oddly hides in darkness almost all the model shots whereas the LD looks, like you said monochromatic blue (oxymoron I know).
As for the skins tone they are warmer/yellower then the BD (see the first couple pages in this thread before I was set on the LD), that is also consistent with the LD and actually one of the reasons I was happy to grade to it since the BD skin tones are too pale.
It basically a choice between the paler/cooler BD vs this saturated/warmer regrade
There is also a bit of discussion here too: