Why do we perceive the sun as yellow? I understand that its colour arises from the mixture of wavelengths in sunlight. But as sunlight has been the main source of illumination throughout evolution - the background light to everything on the planet up to the invention of electric light - it gives us our default colour for everything. So why don't we consider it to be the neutral colour - in other words, white?

Perry Bebbington, Kimberley, Nottinghamshire, UK