Turmeric, on left, was used to make the yellow in the cupcakes on the right. NPR; Courtesy of colorMaker Inc. hide caption toggle caption NPR; Courtesy of colorMaker Inc. The Salt Move Over, Yellow 6. More Natural Colors From Plants Are Coming November 2, 2015 From purple carrots and cabbage to grapes, the food industry is finding new ways to derive natural colors from plants. It's happening just as consumers are pushing Big Food to ditch artificial colors.