As a novice in the art of mushroom identification I have come up against the challenge of color. Verbal descriptions do not have a universal unifomity, nor is there agreement on what visual color matches a given description.

Is there some use for a light or color meter that reads angstroms or some such thing to give a scientific, objective standard for what we then interpret as color? Even if our subjective experience is somewhat different, wouldn't agreement that a given thing reflects light of a certain measured intensity and hue at a certain number of angstroms work?

And is there a modestly priced and readily available instrument to do such measurements reliably?