High Quality Content by WIKIPEDIA articles! The Colours of Animals is a zoology book written in 1890 by Sir Edward Bagnall Poulton (1856-1943). It was the first substantial textbook to argue the case for Darwinian selection applying to all aspects of animal coloration. The book`s support for sexual selection was criticised by Alfred Russel Wallace, while both its Darwinism and a momentary lapse into Lamarckism were attacked by Edward Drinker Cope. The book also pioneered the concept of frequency-dependent selection and introduced the term "aposematism".