Harmy said:

It's clearly either a very warm back-light or a badly set camera - you can see the perforated stripes on the sides are yellow too and those are clear, so should be white :-)

My thoughts too but I saw that in the discussion on Last Crusade's 70mm showing and though well that's not going help people in this thread. Ha

(Although I've seen a lot of slightly yellow sprockets on 70mm before.)

http://www.thedigitalbits.com/columns/history-legacy--showmanship/last-crusade-25th-anniv

If my PM holds out you can PM me for the LD soundtrack.