They judge peoples personallities upon them, and even eat them!  <--(Crayola, for those special few).

The natural colors of the world, Aspen trees, Northern lights, Vibrant pink and red sunsets that look like fire blazing just above the horizon, wide open deep polorized blue skies with the spotted clouds that seem to go on for infinity.  They stimulate the brain so much, they can control a human mind all the way from relaxation to Servere seizures...<---wow say that 10 times quick...haha!..aaanyway.  I am just reminding whom ever is reading this that feel privalaged that you are not a Bat or a Naked Mole Rat...or just a plain blind humanoid.  Open your eyes to the world and find the beauty in the dance of the endless colors around you, let them soak into your eyes and into your heart...use them.