AntcuFaalb said:

Damn. It's different in almost every single shot.

Edit: Possible reference? http://starwarsaficionado.blogspot.com/2012/07/star-wars-at-35-preparing-death-star.html

Nice find! All these behind-the-scenes shots and videos are important references because of Lucas's manic revisionism and Lucasfilm's professional shortcomings on the "released" movies. It is a printed picture however (a zoom-in will reveal it), and while the Death Star walls show blue, they are slightly less so after color correction.

Unfortunately, Harmy's picture strip does show inconsistency from shot to shot. That's a lot of work to rematch them all -- thank you, George. :) Perhaps the new AE software will automate it (better?).

Harmy said:

I couldn't get rid of the green tint before without screwing up the sabres and skintones.

A test color correction on a frame from a revised v2.1 snapshot ...

... based on known grey areas (low, medium, high) in the picture ...

... as those points were greyed (R=G=B, using the highest value for this overly dark shot), produces new RGB curves and the corrected shot:

Although this looks close to v2.0, the "green tint" is reduced mostly in the lighter areas (ex: light saber, illumination panels) where it catches the eye.

(Note: RGB grey should never be exactly R=G=B, as true grey probably doesn't exist in a movie image ... but it's good enough for this proof-of-concept.)