@whirly its not about the "color: blue". its the implications of the expressions they are attached to
"not-cumming blue soul"
its a reference to blue balls
which implies balls that have been denied cumming (discomfort) (implying turning physically blue from discomfort and pain from "being too full")
and also simultaneously a reference to feeling blue
which implies feeling sad, depressed, melancholic
so a blue soul, in the context given, means a soul left feeling terribly down when it needs its sad emotions let out. Not letting the sad emotions out causes everincreasing discomfort. this is putting several different meanings and thoughts into the same word through word association.