Why did color vision evolve?

L.S.,

Perhaps a very simple question, but why did (color) vision evolve?

Much is known and speculated on how from a rudimentary eye, vision and
color vision might have evolved, but it seems like a big energy
investment. Also the brain would have to adapt or be able to
interpreted the signals.

But still, why did (color) vision evolve? Wouldn't it be enough to see
in black and white?

I got this question from friend of mine and I was not able to answer
it! And on Google (Scolar) there only thing to find on how it evolved.

Can you point me to some articles, books or websites?


.

Loading