The common factor between these traits are in fact the predators and prey defense mechanisms.
For example, a poison Dart frog’s colorful appearance gives off aposematic signals. “Aposematism, also called aposematic mechanism, biological means by which a dangerous, or noxious, organism advertises its dangerous nature to a potential predator. The predator, having recognized the dangerous organism as an unfavourable prey, thereupon desists from attacking it.”