The fact that artificial dyes (most petroleum based) are still allowed in our food is appalling. These additives serve no purpose other than aesthetic appeal and there are plenty of natural coloring alternatives for companies that still want their food to be colorful just for the sake of marketing.
The studies are overwhelming:
http://www.webmd.com/add-adhd/childhood-adhd/food-dye-adhd
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2957945/
http://www.forbes.com/sites/rachelhennessey/2012/08/27/living-in-color-t...
Other countries have taken a stand in the best interest of their citizens... why hasn't the US/FDA??
http://abcnews.go.com/Lifestyle/Food/11-foods-banned-us/story?id=19457237