The McDonald's 'golden arches' emblem is one of the most distinctive logos in the world. It has been used since 1961 - but people are only just learning the psychology behind the iconic colours ...

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 ...

In Sedona, Arizona, however, the familiar M logo is blue. This turquoise deviation ... Government officials demanded that McDonald's use a color scheme that complemented the city's mountains ...