I heard it was going to be dark blue.
to me it would of made more sense to make TTT:ee the blue one and ROTK:ee the red one, because those colours are more consistent with the tones of the movie and what we see. Helms deep is very blue toned, and mordor in rotk is very red. ROTK in general had a very warm tone to it while TTT had a very cool tone to it.
Things like this prove that I need to get a life
After relocating my Extended Edition DVD’s after a move, I am still annoyed that they didn’t do blue for Two Towers and red for Return of the King. The biggest reason for it, other than the red of Mordor, is that this is the movie where Frodo writes down all their adventures in The Red Book of Westmarch!
Some of us still haven’t gotten a life.