http://blogcritics.org/video/article/color-grading-lord-of-the-rings/
It looks like for the BluRay release of the extended editions, PJ tweaked the colors a bit for Fellowship of the Ring. The result is a very minor green shift that ultimately isn’t obviously detectable, according to. The idea behind the shift was to get the color grading in line with the next two films, by the end of which they had far greater experience doing this. I saw Fellowship Extended in theaters three weeks ago, and didn’t notice any huge change. Anybody who has the set here wanna comment?
I personally hate the green shift, among many of the other color issues in the Blu-ray release. For that reason, I decided to completely restore the original color. If anyone’s interested, feel free to take a look: https://originaltrilogy.com/topic/44rh1ns-The-Fellowship-of-the-Ring-Extended-Edition-Color-Restoration/id/61952