Citrus Zest

Coke with lime would taste good. It would taste a little better. Here is a history from Wikipedia of Coca-Cola with Lime and Diet Coke with Lime:

Coca-Cola with Lime (sometimes called Coca-Cola Touch of Lime) was a variation of the original Coca-Cola. It was introduced in North America in the first quarter of 2005 before being quietly discontinued in 2006. The formula is the same as regular Coke but with added lime flavor. The decision to market the product was based on popular feedback from consumers in 2004 with the release of Diet Coke with Lime.

An advertisement of Coca-Cola with Lime first appeared on television during the March 7, 2005 broadcast of American Idol. The ad uses Harry Nilsson's hit "Coconut" in an edited and slightly altered form with the mondegreen "You put the lime in the Coke, you nut."

In 2009, Coca-Cola Freestyle machines began carrying Coca-Cola with Lime, along with its Diet counterpart


Diet Pepsi Lime is really good and I like it.
For a cool, fresh flavor - let it be Pepsi Lime.
Have the Lime of Your Life.