And if swearing off fast food wasn’t hard enough, those colorful red logos might make it even harder to ignore. The average human can see ten million colors, but red is special. Turns out ...

The stunt was timed to coincide with National Fast-Food ... restaurants to swipe customers' drinks and replace them with Pepsi cunningly disguised in cups bearing redesigns of famous fastfood logos.

McDonald's. Arby's. Wendy's. Burger King. Jack in the Box. In-N-Out and more all use the color red heavily in their logos, why? The answer goes back thousands of years. Following is a transcript ...