Five years later, in 1999 ... logo remained almost entirely unchanged between 1969 and 2013. The fast-food restaurant's new logo, which launched in 2013, gave Wendy a fresh look.

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 ...