This depends on the type of food that you're thinking about. When it comes to types of lettuce, you want to try to consume dark leafy greens instead of iceberg lettuce. Oftentimes, there are more antioxidants in darker vegetables. For example, black beans contain more antioxidants than white beans.That being said, white beans have higher levels of iron, potassium, and protein than black beans do.
Red and orange vegetables, such as red and orange peppers, are higher in Vitamin C than most other vegetables. Green vegetables tend to be higher in iron, especially dark leafy greens, such as kale or spinach. Dark green leafy vegetables tend to be higher in protein as well.
It is important to eat a variety of colors to ensure that you're consuming adequate nutrition, so try to incorporate different colors into your meals each day.