Is food color safe to eat?

Recent studies have shown that eating food coloring can cause a condition in humans known as hulkism which basically aside from provoking a "green phase" also causes your muscles to expand in a fit of rage if you get upset about something or your heartrate is increased significantly. this condition is also caused by exposure to gamma radation, which i believe is how food coloring is manufactured. so you may wanna stay away from that stuff (specially the green one).