They used these things: https://125px.com/docs/unsorted/kodak/tg2044_1_02mar99.pdf https://125px.com/docs/unsorted/kodak/tg2044_1_02mar99.pdf It was an automat

They used these things: https://125px.com/docs/unsorted/kodak/tg2044_1_02mar99.pdf https://125px.com/docs/unsorted/kodak/tg2044_1_02mar99.pdf It was an automatic process and colours were consistent. I find that reading theories about what might have happened 20 years ago is becoming pretty annoying. I shot some kind of Fujifilm mostly and if it was under/overexposed that was like your problem.