Colour is all around us. Wherever we look we see colours, even if we do not always notice them. Nature is full of colour. Take a close look at snow or ice - if you can, you will see colours ranging from shades of white to shades of blue. Not even sand consists of a single colour, but is made up of tiny grains of many different colours.
The human eye can differentiate between hundreds of thousands of individual colours. However, individual colours do not usually attract our attention, but rather their harmony or lack of it. A striking combination may either please or dismay us, but it will never leave us cold.