Did it work? Do these two beverages really have a different taste, or is Coke Zero just a trendy name? Here's why the Coca-Cola logo is red—and always will be. Diet Coke and Coke Zero both have ...

Coca-Cola’s Coke Zero is running an interactive ... an SMS call-to-action will be promoted with on-air keywords and alerts with the Coke Zero logo that prompts users to text-in to win prizes.