Wellness Tip: Consider a rainbow of colors on your quest to eat your way to better health. White foods like garlic and onions help boost the immune system. Green vegetables detox the body and provide a wealth of vitamins and minerals. Yellow foods like lemons and bell peppers serve to improve skin elasticity. Orange foods ranging from carrots to oranges can help prevent cancer. Cherries, pomegranates, tomatoes and other red foods keep the cardiovascular system healthy. Blueberries and eggplant are purple foods that enhance overall longevity.