Which color was intentionally added to McDonald's brand identity in the 1960s because psychological research suggested it could stimulate hunger and encourage fast eating?

Brand colors are powerful tools in the food industry, creating instant recognition and emotional connections with consumers. Some food brands have spent millions refining their visual identity, with colors carefully chosen to evoke specific feelings - hunger, excitement, trust, or nostalgia. This trivia question explores how one of the world's most recognizable food brands made a strategic color decision that helped define its global identity.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Yellow (as seen in the Golden Arches)
Red (as featured prominently in restaurant designs)
Green (introduced for environmental positioning)
Brown (to reflect their signature burgers)