Thanks for that confirmation, captainsolo! As StarThoughts indicated, there's so much revisionism going on that it throws everything into question.
For example, that Kubrick-on-the-set photo shows a brighter and slightly pinkish-cream color to the shot. As an experiment, I tried a color-correction-match in that direction (strictly apart from the laserdisc palette). It's appealing to wonder about this:
Has anyone bought that exhaustive (just try carrying it) & budget-killer 2001 encyclopedic reference work? (Maybe that would help.)
A closer look at Taschen's deluxe book, The Making Of 2001: A Space Odyssey
http://www.denofgeek.com/movies/kubrick/30844/a-closer-look-at-taschens-deluxe-book-the-making-of-2001-a-space-odyssey