Shame that the DC got rid of the gold colouring for that scene, was a very interesting design choice, sort of an "ancient Egypt" golden tomb thing going on. It looked quite striking, especially since it contrasted so much with the design of the rest of the film.

As for Aliens, there are only two scenes so far that look like they are significantly different than the previous version, that being parts of the two queen alien sequences where some shots that were only partly blue-lighted are now much more predominantly blue, and slightly darker too. The rest of the film looks like it is simply truer colours compared to the washed out, red-shifted, poorer transfers of the past. I'm not sure whether to call the new blue shots revisionism though--in some ways they do match continuity-wise better with surrounding footage. Maybe the footage was always meant to be timed that way even if it wasn't photographed that way, so previous versions left the footage as it was and thus presented it wrong. Or maybe they decided to "correct" it now when it was always uncorrected mixed lighting in the original release. I guess you'd have to take a look at a print to know for sure. I usually see an original 35mm copy once a year so I'll be sure to note how it looks next time I get the chance, since that is pretty much the only way to know.

With the de-graining and the new FX fix though, I'm not sure how much one should care about "purism", since this is not completely accurate to its original version any way you cut it. If its a change, it's very minor like the others. But, as I said, from the examples posted it doesn't look like the photography is obviously different except in a couple instances, whereas though many other caps look slightly different from previous versions this is probably just due to better accuracy in the transfer (previous versions are fairly pink, and slightly dull).