It seems that rainbow is a trend on everything these days. From rainbow-tinted cupcakes to rainbow-dyed yogurt, we’re growing accustomed to adding a touch of color to our everyday meals. Buying highly tinted foodstuffs from our local grocery store is becoming essential (and let’s be honest, fun) for home-cooking. But have you ever considered what’s behind those food dyes? It doesn’t take a bag full of candy to introduce petroleum-based products into your family’s diet. It’s time you know your rainbow of risks. Here are 8 food dyes that have shown some concern to scientists and health providers over the years.