Fascinating!
I want to get glasses that let me see the colors that some birds and fish can see. They are tetrachromats, which means they have 4 kinds of color-sensing cones in their eyes, as opposed to just three in humans. They can see colors into the UV spectrum. Apparently it's a recessive gene in humans too, and very rarely a human (usually a female) will be a tetrachromat as well! How strange it would be, to see colors nobody else could see!