Even Google and the Army are on board. But the danger is that labeling foods as “green,” “yellow” or “red” won’t really help us become healthier eaters — just guiltier ones.

Green peppers contain a variety of nutrients and are rich in vitamins C and B6. They’re a great way to increase your fiber and nutrient intake while protecting heart, eye, and gut health.

"In terms of color, apples can range from green (like granny smith) to yellow ... heart disease, diabetes, cancer and more," said Lindsay-Adler, a registered dietitian nutritionist. Red apples ...