Here's an interesting exercise making the social media rounds lately  - http://www.igame.com/eye-test/ - See how sensitive you are to subtle shades of color differences. (For instance, differences in paint touch-ups on a dark accent wall that's been exposed to the sun for a few years!)Click on the "more info about colour vision?" link at the upper right of the page for some interesting facts about how our eyes perceive color. I (Alanna) did pretty well on the test and hit Hawk. I'd be interes...