The Lord Of The Rings: The Fellowship Of The Rings is Lucas-esque(tm) in it's amateurish re-coloring of the Blu-ray "Extended Edition" release. Regardless of the reasons (or reasoning), it's just plain sloppy work:
(from AVS Forum - The Lord Of The Rings Extended
http://www.avsforum.com/t/1307189/the-lord-of-the-rings-extended/990#post_20560106
with 4 more montages there linked)
An automated process, even if it worked (as there seems to be some question if one can do), for correcting the Blu-ray from the DVD, still would be problematic. Perhaps a simple color-correction applied across large swathes of film-time (with tweaks as needed) would do the job ... both here and to other movies.
For example, this EE DVD snapshot would be the target:
It's EE Blu-ray counterpart to correct:
would be processed with these few and simple settings:
low gamma high midtone (compress)
R 0 1.4 195 15
G 0 1.1 225 15
B 0 1.2 190 15
to produce this corrected EE Blu-ray (yes, really) for this sequence: