I'm loving those ESB caps.
This confirms, preliminarily, two suspicions I had prior: that Hoth had more blue in it than we would at times like to admit, and that the ATAT sequence had a pink tint to some of the elements; you can see this last one in the THX WOW footage. Very promising. It also gives further clarification to an issue that was raised in the SE Changes thread with that Luke-Vader ESB cap (i.e., home video lightsabers were fatter due to white level clipping)