Ultimately you have to remember that color is absolute and that it is always relative to its sorroundings. From: http://www.cs.brown.edu/courses/cs092/VA10/HTML/AlbersExplanation.html Albers was a student of Itten. So this shows how little I know of colour theory (or have forgotten.) Anyways, this supports my theory that B&W film photography preserves colour as absolute.