Kraft Heinz said it expects its operating income to fall up to 10% this year. It had previously expected a decline of up to 5%. The company said it needs flexibility to offer promotions and step up marketing. It also wants to add value options, like a new 11-ounce Kraft Mac & Cheese that's designed to feed a family, about 50% more than the original 7.25-ounce box. The company said it also may need to respond to changes in federal regulations. Last week, U.S. health officials urged food makers to phase out petroleum-based artificial colors in the nation's food supply. Kraft Heinz CEO Carlos Abrams-Rivera said Kraft Mac & Cheese has been free of artificial flavors and colors since 2016. But some of the company's products, like Kool-Aid, do contain artificial colors. Kraft Heinz said its net revenue fell 6% to $5.9 billion in the January-March period. That was shy of the $6.0 billion Wall Street was expecting, according to analysts polled by FactSet.