Which country consumes more Coca-Cola per capita than any other country and what color was coke before the introduction of caramel color #39?

Dr. John Stith Pemberton first introduces Coca-Cola in Atlanta, Georgia. The pharmacist concocted a caramel-colored syrup in a three-legged brass kettle in his backyard.

It's official. Iceland is the world's biggest consumer of Coca-Cola. Its population knocks back 417 (220 ml) bottles a year per capita. That's about eight a week each. 'We don't look at markets as developed and underdeveloped in terms of GDP but in terms of per capita consumption,' says Coca-Cola Greater Europe group president Neville Isdell in the Financial Times. By that criterion, Europe's most underdeveloped countries include Italy, which drinks only 95 bottles/person/year. Former Soviet Union countries Belarus and the Ukraine consume only about 20 bottles per capita, and Poles drink only about 45 bottles each.

https://www.heraldweekly.com/facts-about-iceland-that-make-it-unlike-any-other-country/75?xcmg=1&_d=d

As of 2011, Coca-Cola, Inc. lists Mexico as the largest consumer of its product, 728 eight ounce servings per capita, or 5,824 ounces.

coca-colacompany.com/annual-review/2011/pdf/2011-per-capita-consumption.pdf no longer exists
https://www.statista.com/statistics/505794/cds-per-capita-consumption-in-worlds-top-ten-population-countries/

And it has always been brown.
https://www.reference.com/food/original-color-coca-cola-d7732494197e2848