Friend or foe? Sometimes colours call out a warning, and red is very often used as a sign of danger. Poisoned apple perhaps, or is it safe to eat? We breed our fruit now to make it look more appetising, and it can, if hurried on or waxed, or refrigerated for importation, seem a little false or unnatural. But red can also mean luscious and that goes for strawberries and lips too. Red is the colour of passion and of the blood that we carry unseen.