Bright oranges include butternut squash, sweet potato, carrots. Tomatoes are particularly good for you. Buy seeded, not seedless watermelons. Blend the flesh in a blender, perhaps with some ice. The black husk of the seeds drops to the bottom. The flesh of the seeds, full of essential nutrients, becomes part of this mouth-wateringly refreshing drink. Strawberries are a low GL fruit. Red, yellow, green and orange peppers are all rich in vitamin C.