Ogilvy France recently created the above Coke Zero campaign that so far has over 1million views on YouTube. They wanted to see what it takes for people to notice the difference between Coca-Cola and Coke Zero, without conducting another boring taste test.
They created a campaign called Zero Clue, an interactive taste test that got Coca-Cola drinkers unknowingly enjoying a Coke Zero thanks to a unique and innovative colour-changing can. Enjoy.