I've had a similar result once before on a very old LD cap of the US SE LD. That was IIRC on an old Pioneer V-2200 though a miniDV deck as a passthrough. When I saw the old captures they had no pink shift in the Mos Eisley sequence (easiest big offender). Some of the SE VHS tapes also seem to lack in the pink shift from time to time.
I was under the impression that it was only ANH that suffered this issue.