Major food brands are pledging to phase out synthetic dye from snacks, candy and cereals: Kraft Heinz, Nestle, Campbell’s. Is this investment of time and money — to make natural colors look less so — worth it? Recent research by Galligan and other scientists found synthetic food dyes in nearly 20% of packaged food and drinks sold in the U.S., especially those marketed to children. “People think food tastes better if it’s brightly colored,” says Marion Nestle, a longtime public health nutritionist who’s tracked research on food dyes. As of June, Sam’s Club was 96% of the way to its goal of ridding its food of artificial colors and other ingredients.