Right. As the article said, most of it is about contrasting human skin with the background.
Walk down a produce aisle and you'll see red and green together, purple and yellow together, so on and so on. Contrast makes things pretty. Pretty things are things we're more likely to buy.
Of course...
I compare Half Life 2 with something like Inception. The technological advances in each were groundbreaking and received alot of critical acclaim, and for a ton of the people who played HL2 or watched Inception, they were great. The problem comes when you actually break them down and realize...
I had red, blue, yellow, gold, silver, and crystal. I think I only beat red, blue and gold. Best thing was the trick to get unlimited items in red and blue! Enough rare candies and master balls to get lvl 100 everything!