Most primates have excellent colour vision, and colour too can be used in communication. Adult Phayre's leaf monkeys might seem rather drab. But not so their newborn. Bright orange fur makes the babies very conspicuous, so the adults can easily keep an eye on them. Close friends and relatives are eager to help the mother with baby-sitting. It's a good chance for the younger ones to practice parenting. As a result, a baby is never left on its own for long.
