The natural world is full of colours that we tend to take for granted. In this series, David Attenborough travels in person from the rainforests of Costa Rica to the snowy Scottish Highlands to reveal the extraordinary ways that animals use colour. The peacocks magnificent tail evolved to impress the peahens, while the poison dart frogs brilliant colours warn of its deadly toxin, and the Bengal tigers orange-black stripes help it to hide from its prey in a surprising way.New camera technologies - some developed especially for this seriesallow us to see colours usually invisible to our eyes. From the UV signals on a butterflys wings and facial markings on a damselfish, to the strange polarisation patterns sported by the peacock mantis shrimp, David Attenborough reveals a hidden world of colour.So, what happens to animals when their world changes colour? We witness the way colour is changing in a warming world and learn of the effect this is having on animals - and how some are co