"We have been working to remove artificial colors and flavors across Kellogg's branded cereals and a variety of Kellogg's branded snack bars as well as Eggo frozen foods," Paul Norman, the president of Kellogg North America, said Tuesday in a call with investors. Kellogg to stop using artificial ingredients by 2018 "We have been working to remove artificial colors and flavors across Kellogg's branded cereals and a variety of Kellogg's branded snack bars as well as Eggo frozen foods," Paul Norman, the president of Kellogg North America, said Tuesday in a call with investors.