Cross processed slide film when balanced to appealing skin tones can send the rest of the picture to a strong vibrant green. In this case it’s used as a gritty fluorescent effect. This could also be described as an aquamarine wash with skin-tone recovery selections.
Both of these scenes have a sort of gross institutional feel, the kind of place you wouldn’t want to spend a lot of time, which says something about the motivations of the characters found there.