Color determines food judgment. According to Hoegg and Alba (2007), for instance, the brightness of an orange juice affects people’s taste discrimination more strongly than its brand name (e.g., Tropicana or Winn-Dixie) or its price information. Food judgment is probably influenced by the hue and saturation of the food as well.
Recently, I find some stores selling blue-colored iced tea. This unexpected color may attract significant attention among those who do not drink teas or who is visually attentive such as kids. However, most adults around me infer it as a poor-quality fake beverage because, they believe, tea is supposed to be orange rust or brown regardless of its temperature. This suggests that changing the color of a given product enables designers and marketers to pursue a new market by sacrificing their traditional market.
Surprisingly, there exists a green wine called Vinho Verde in the world! 🙂