There are many words to describe red: true red, tomato red, fire-engine red, crimson, scarlett, burgundy, maroon, rust – each of them denoting a different kind of red with slightly different qualities. Red is used to denote danger both by humans and animals alike. The colours we use for warning signs – yellow, black and red – are the same colours found on poisonous snakes, spiders and insects. In fact, these colours are so effective, that in nature, mimic animals have evolved that share the same warning colours but are completely harmless. They pretend to be dangerous by advertising with bold red, black and yellow!