I have been thinking about this lately...I read everywhere that "eating the rainbow" is a great way to see whether you are getting all you need out of your food. In reading Eat To Live, I realize that even sort of healthy vegan eating can weigh heavily on the way less colorful aspects of food...brown and white. Here are my ways of eating the rainbow lately.
For breakfast I eat Purple grapes, Blueberries, Red apples, Orange melon, Green kiwis, and Yellow bananas
For lunch I eat Green lettuce, Orange Carrots, Red tomatoes, Green Peppers, Red Peppers, Yellow Peppers, Purple olives, White tofu, Brown beans
For dinner I eat: White/brown millet, Brown beans, Green cabbage, Red tomato sauces, Red salsa, Black-Eyed Peas (lol), Green lettuce, Green kale, Green spinach, White onions, White beans, Yellow curry (that's not a veg I know!), and lots of other colorful fruits/veg.