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.
But perhaps the main use of black and white is in print, colour being the exception. Black and white seems to carry authority, so very few books are printed with coloured text or paper, except where emphasis is needed. But in advertising, film and television, colour is so common that black and white may be used for greater impact. There are numerous ways of creating colour. The chief division among these is between colours produced by materials such as pigments, which work at the atomic or molecular level, and colours produced by structures which are comparable in size with wavelengths of light, thousands of times bigger thah atoms.