Comment by mrguyorama

I was going to mention the Noodle video on that

https://www.youtube.com/watch?v=lPU-kXEhSgk

TL;DW, different physical rolls of film sent to different movie theaters can have slightly different coloring, if they were done by different people or different companies or even if someone just did their job differently that day. Film color was not an exact science and not always perfectly repeatable, and depended on chemistry.