Multiple choice general knowledge science & technology What color Coca-Cola would have, if colouring weren’t added to it. Red White Blue Green Reveal answer Fill a bubble to check yourself D Correct answer Explanation Without caramel coloring, Coca-Cola would be green due to the combination of ingredients. The original formula's acids and other ingredients naturally produce a greenish-brown color. Caramel E150d is added to give the familiar dark brown appearance.