In November 2011, Coca-Cola introduced a white can to launch a $3 billion polar bear conservation campaign in partnership with the World Wildlife Fund. Each container features a stylized image of a mother bear and two cubs. Surprisingly, the campaign ended after one month. Some customers complained that they confused the white can with the similar-looking Diet Coke grey can. Others believed that the white can was altering the taste of the Coke, and not for the better. Coca-Cola promptly removed all white cans from retail stores. The red Coke can "could well be the most recognizable food or drink packaging in the world," so a dramatic makeover is "a recipe for catastrophe," says Chris Greenhough at The Inquisitr. Coca-Cola returned to their classic red packaging and scrapped the 1.4 billion white cans produced for the Polar Bear campaign.