That's interesting. There was, infamously to some, a director of my acquaintance who would go to the projection box and hold filters in front of the lens in an attempt to achieve hues more to his liking than what the grader (or timer to you Yanks) had achieved. Some directors never let go of a film.
I went to see "Hitchcock" yesterday and Mr H. took up a post for a while in the box at the first screening, I was waiting for him to do the same! But it didn't happen, maybe because the film was monochrome.
Mamiya: 7 II, RZ67 Pro II / Canon: 1V, AE-1, 5DmkII / Kodak: No 1 Pocket Autographic, No 1A Pocket Autographic | Sent w/ iPhone using Tapatalk