Colours Synchrotron Radiation Thermal Emission Waves Colour is so ubiquitous that we often take it for granted. More unusual in nature are black and white.
Some clouds are white, snow is white, some swans, geese and other birds are white.
Coal is black, crows and rooks are black. But the list is not long. For black and white we can look at the magpie, pied wagtail, gannet and lapwing, marbled white and black-vieined white butterflies, male adder, and quite a few other examples. Black and white artefacts, too, are not common. Some houses are black and white, for example.