Coca-Cola launched what was to become one its most successful branding campaigns. 'Share a Coke' saw the Coca-Cola logo ...

"We wanted to have a little bit of a humorous tone to this," Cha added. "Know The Signs" echoes Diet Coke's advertising from the 1990s, when the brand "was all about the Diet Coke break," Cha said.

Coca-Cola (NYSE:KO) is considering a new advertising partner for North America instead of its existing media account holder WPP (NYSE:WPP), Digiday reported Friday, citing three sources.