Coca Cola was NEVER green

Contrary to internet lore, Coca-Cola has always been brown. The original Coca-Cola formula contained caramel, which gave it its distinct brown color. The brown color was important for the purpose of hiding imperfections. With modern production, that's less of an issue, but it's still naturally brown in keeping with tradition. And in case you were wondering, YES, Coca-Cola DID used to have cocaine in it back in the day. It was named after two of its key "medicinal" ingredients: coca leaves and kola nuts. However, Coca-Cola has been cocaine-free since 1929.