On the subject of the jacket, I own one of those myself:
That original dye (purple taupe) is notorious amongst Alien costume enthusiasts because it photographs so inconsistently in the film (the various light sources, filters and gels used by Scott don't help with this). So looking at screengrabs and saying, "that one looks the most like the real thing," isn't really useful; the question is which most looks like an original answer print, consistent or not.
The shuttle sequence is a very tough one to judge. I looked at the book stills for this scene, and wondered why the shots are so wildly varied in lighting; I only remembered when I checked the video versions that the scene is strobing from orange to white/blue throughout.
In short, and perhaps inevitably, the 1979 stills look just like the 1995 laserdisc. It's a very stylised sequence, with Ripley illuminated by the aggressive warning lights on her console; neutralising the colours just works against the intent of the scene. And doing so without consistency is just plain sloppy.