Part of the balanced diet is thinking not just in terms of flavor, but of color, both contrasting and complementary. “Eat your greens” is not just a phrase meted out by concerned parents; it’s based on fact: green food, particularly dark green leafy vegetables, is good for you. In Chinese medicine, there are links between the organs, taste, and color.
Consumers buy food based on its color: it is no coincidence that supermarkets use pink light on meat to make it look healthier and brighter. When eating, try to develop what some people call “rainbow” eating, i.e., working your way through a variety of colors during the course of the day to ensure you are eating a varied mix of nutrients.