I guess then it begs the question, is green more common now because of a defunct ideas about red, or just because visual confirmation isn't as important as it used to be? In one case though, if you weren't just staring at screens, you wouldn't want to be on the bright side of a comet while trying to grapple it. Psychologically, maybe red in space is a bad idea anyhow. Psychologically it's just more unnerving than green, which is not something you want when you have a handful of people trapped in a tin can long-term. But wasn't red often used in subs? Or is that just a Hollywood propagated myth?