When you see a green-colored calorie label, you may assume that signifies a healthy product. But sometimes yellow for caution might be a more appropriate choice of hue.
Consumers tend to associate the color green with good health whether a product is nutritious or not, reports the journal Health Communication. In an experiment at Cornell University, volunteers rated two candy bars for calorie content and healthfulness. One bar displayed calorie information on a green label; the other used a red label. Even when the products contained the same number of calories, volunteers perceived the green label as healthier.