What color was the soft drink Coca Cola when it was first introduced?

The answer is: brown

A frequent internet answer is "green" and it is wrong:

http://www.snopes.com/cokelore/green.htm

At no time in Coca-Cola's history has that beverage been green. The original formula called for caramel to give Coca-Cola its rich brown color, and although the recipe has undergone some changes through the years, none of them affected the ultimate color of the product.

Also originally Coca Cola contained some amount of cocaine hence the name...also when first invented only the word "Coca" was patented leaving the door open to other "cola" products.