I'm "coloring" my cables so I can know what cable is each one.
@fonso_s It's not visibility that worried me. It's whether chemical attack might affect their function. Your experience suggests this isn't a problem in practice.
@fonso_s And maybe they won't spoil.
@hendrikboom3 this cables have several years and won't move or be very visible, so I don't mind if they spoil a bit.