Getty Images Yellow No. 6, or Sunset Yellow FCF, imparts a vibrant yellow-orange hue to Airheads, Jolly Ranchers, Lucky Charms and other processed foods. It can be contaminated with the carcinogen ...

But ever thought what gives it that orange-yellow hue? No, it’s not saffron since that’s quite pricey; it’s often a food colour called Sunset Yellow FCF.