According to Gary Blumenthal from International Food Strategies blue is a color that generally doesn’t appeal in food. Colours that should get your appetite going are reds and greens, but this varies with culture.If you want to lose weight it can help to add some blue coloring to your food, also blue plates and a blue light bulb in the dining area could do the trick. And on a side note, this blue strawberry exists!
On the contrary: These are some of the favorite colors of fast-food chains!
If you want to know more: