I found another picture:   http://scnc.sps.k12.mi.us/~murphym/the%20smurfs.jpg  :D    Now, seriously take a look a this article:       The blue Fugates weren't a race but rather an excessively tight-knit family living in the Appalachian Mountains. The patriarch of the clan was Martin Fugate, who settled along the banks of Troublesome Creek near Hazard, Kentucky, sometime after 1800. His wife, Mary, is thought to have been a carrier for a rare disease known as hereditary methemoglobinemia, which we'll call met-H.  Due to an enzyme deficiency, the blood of met-H victims has reduced oxygen-carrying capacity. Instead of being the usual bright red, arterial blood is chocolate brown and gives the skin of Caucasians a bluish cast. Hereditary met-H is caused by a recessive gene. If only one of your parents has this gene, you'll be normal, but if they both have it, there's a good chance you'll be blue.   MORE -->  http://www.straightdope.com/classics/a980724.html     http://en.wikipedia.org/wiki/Methemoglobinemia