Go blue … Here's the easiest way possible to lose weight … get some blue plates. A study found that people who ate in a blue room ate 33 percent less. Why? Apparently it has to do with how the color changes the look of your meal. "Blue lights make food look less appealing, while warmer colors, especially yellow, have the opposite effect," says Val Jones, M.D., president and CEO of Better Health. "Fast-food restaurants have known and used this fact for decades, which is why almost all of them have yellowish interiors -- they want you to eat more."