Consumers concerned with the use of synthetic food colorings in food products have taken to the Internet to voice their concerns. Vani Hari from the blog “Food Babe” started an online petition on Change.org in early 2013 urging Kraft Foods to remove synthetic yellow food colorings from its Kraft Macaroni & Cheese products and replace them with naturally derived ones. Another petition, this one sponsored by The Center for Science in the Public Interest and Renee Shutters, a …