Some friends and I were going to have a Star Wars OT marathon before TFA, and I decided to use the Grindhouse version of ESB. So to that end I have made a LUT to correct the colors:
Key: !HCtmQgTtkQtuj6qIbLw4mvrIEodn2q1hODyAr_Pm9l0
http://screenshotcomparison.com/comparison/154438/picture:0
JEDIT: See updated LUT below!