warning coloration(n = noun.attribute) aposematic coloration - conspicuous coloration or markings of an animal serving to warn off predators; "a skunk's aposematic coloration"
is a kind of protective coloration

apatetic coloration, aposematic coloration, coloration, cryptic coloration, early warning radar, early warning system, protective coloration, strategic warning, tactical warning, warning, warning bell, warning device, warning light, warning of attack, warning of war, warning signal, without warning