Green
Positives: nature, spring, environment, wealth, good luck, vigor, generosity, fertility
Negatives: aggression, envy, misfortune, inexperience, greed, illness
Yellow:
Positives: Sunlight, joy, happiness optimism, summer, hope, wealth
Negatives: cowardice, illness, sissy, weakness, dishonesty
Colours play a huge role in people's perceptions and its choice depends on the message, the market and a product
Of all the colors in the spectrum, blue is an appetite suppressant. Weight loss plans suggest putting your food on a blue plate.
Blue food is a rare occurrence in nature. There are no leafy blue vegetables, no blue meats, and aside from blueberries and a few blue-purple potatoes from remote spots on the globe, blue just doesn't exist in any significant quantity as a natural food color.
Consequently, we don't have an automatic appetite response to blue. Furthermore, our primal nature avoids food that are poisonous. A million years ago, when our earliest ancestors were foraging for food, blue, purple and black were "color warning signs" of potentially lethal food.
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