Here you are some details about colours of Feng Shui and its propierties in nutrients:
Red: It give you energy and vitality. It bring more estrenght. It provides you self-trust. The adequate food are: cherry, pepper, beet, garlic, radisch, strawberry, and something else.
Yellow: It provides you of optimism, the power of communicability and to interface with people. It combat bad thinking. Food: banana, lemon, melon, pineapple, corn....
Blue: It provides peace and tranquility of mind. It help doing meditation and get get in touch with oneself. Relax nervous and it's the best uplifting. Food: Fish