The problem of colour

Colours are a familiar and important feature of our experience of the world. Colours help us to distinguish and identify things in our environment: for instance, the red of a berry not only helps us to see the berry against the green foliage, but it also allows us to identify it as a berry. Colours perform a wide variety of symbolic functions: red means stop, green means go, white means surrender.
Read more: https://blog.oup.com/2017/12/problem-of-colour/?source=Snapzu