The Colour of the wind

Anyone who thinks that air is invisible is impaired by a sort of color blindness.  Indeed, the air is so alive with color that it could be likened to a rainbow that encircles the entire earth with pink, red, violet, gray, blue, and yellow.  

Ask a naturalist or a painter, and you'll hear descriptions of an airy spectrum that escapes the unobservant viewer.  Carried by swirling dust particles and refracted by the prisms of water vapor, the colors of the air are best observed in a mass.  

Mountaintop vantages, canyons, desert expanses, or deep valley views are recommended.  The warmer the temperature and the stronger the wind, the more colour will be detectable.  Rising heat carries finer dust particles deepening the air's hues, while high winds carry larger particles, brightening the coloration.