But frankly said, the color scheme of Sam's snapshots is not far from what I can see on my monitor, so I don't think he would deserve the blame. More people independently reported similar disappointment with the new color scheme and that much of the lovely matte detail later in the film has been put into shadow and lost. I have played a lot with saturation/brightness/contrast to find the optimal setting for the FC, with moderate success, but it was never without a compromise - the picture in some scenes looked better, in some worse. Perhaps Ridley thought the hand painting is to obvious and doesn't look good anymore, who knows. Of course, the director has full right to edit his baby as he wants to, but then it's not unnatural if people have hard time getting used to changes such as significantly (and not evenly) altered color scheme.
Not that the picture looks bad, not at all. But for me personally the green/blue tint makes BR closer to much more recent sci-fi films (such as Matrix or Minority Report), while that brown/grey tint of previous BR versions, somehow made impression of true 'vintage', or say 'old school' feeling for me. I think for people who are new to Blade Runner, this would be entirely new, if not redundant issue, and I guess they will love FC immediately and wholeheartedly.
But it's excellent that previous versions were reissued for archival purposes in expanded editions. Many thanks for that!