Diet Coke
Diet Coke does not use a modified form of the Coca-Cola recipe, but instead an entirely different formula. The controversial New Coke, introduced in 1985, used a version of the Diet Coke recipe that contained high fructose corn syrup and had a slightly different balance of ingredients. In 2004, Coca-Cola introduced Coca-Cola C2, which it claims tastes much closer to Coca-Cola but contains half the carbohydrates. In 2005, the company introduced Coca-Cola Zero (replaced by "Coca-Cola Zero Sugar" in 2017), a sugar-free variation of regular Coca-Cola.
The Coca-Cola Company
In November 2011, Coca-Cola revealed a seasonal design for their regular Coke cans as part of a partnership with the World Wildlife Fund. However it was withdrawn only a month after release due to consumer complaints about the similar look to the silver cans commonly used for Diet Coke. There were also complaints about deviating from traditional red as the color of Coca-Cola cans previously.