Did cola used to be green?

No, cola has never been green.

It's a common misconception that cola was originally green, but there is no historical evidence to support this claim.

Cola has always been brown, with its color coming from the caramel coloring added to it. This color is achieved through a process called caramelization, where sugar is heated to a high temperature.

The misconception might stem from the fact that some other carbonated beverages, like ginger ale, were originally green in color.

So, while green cola may sound like a fun idea, it's just a myth!