Susan Oliver was playing a green-skinned Orion slave girl, but I had to test her makeup because she was too expensive and I was under contract already; I was cheap, they had to pay me anyway. The makeup they put on me was green as green can be, but they kept on sending out the rushes and we would get it back for the next day, and there I was just as pink and rosy as could possibly be. This went on for three days until they finally called the lab and said, “What do we do? We’re trying to get it green.” And they said, “You want that? We’ve been color-correcting.”
Excerpt from: The Fifty-Year Mission: The First 25 Years
I just have this vivid image of someone going "Why the fuck do they keep painting them green when they want them to be normal flesh tones? They just doing this to annoy me?" Never once thinking that it was on purpose. I know that's not what happened but it's just so much funnier to imagine some enraged dude who hasn't slept in a week continuously making this one mistake.