Well, maybe it's red for a reason? The "fittest" in the American continent had red skin after tens of thousands of years, most definitely to be able to live with the environment well. Of course, who knows what a city person will look like in tens of thousands of years from now. At least we'd definitely have different stress hormones developed to make us calmer.

"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram