News Health & Medicine Monkeys get full color vision Males with red-green colorblindness can distinguish the hues after gene therapy, study suggests By Tina Hesman Saey September 16, 2009 at 2:22 pm - More than 2 years ago Share this:Share Share via email (Opens in new window) Email Click to share on Facebook (Opens in new window) Facebook Click to share on Reddit (Opens in new window) Reddit Click to share on X (Opens in new window) X Click to print (Opens in new window) Print Two male squirrel monkeys now see the world in a whole new way — in full color. TESTING TIME A colorblind male squirrel monkey named Dalton is pictured here taking a color vision test.