Yellow might be less common, but many fast food chains have red in their logo, and it's not entirely clear whether this goes beyond the fact that this particular color is eye-catching.

People are shocked after discovering why fast food chains have red and yellow logos Credit: Alamy. 2. Leading colour expert Karen Haller explained the reasoning Credit: Alamy.

He sketched out the large white Buffalo on a napkin, and that became was is now referred to as the “Goathead” logo. Farrar never heard that nickname at the time, but he laughs at it now.

Fast food chains, from McDonald's to Taco Bell, utilize various colors to influence potential customers on a psychological level. The color yellow elicits a feeling of comfort, while red tends to ...