Blue eyes:

Close to 8%-10% of people have blue eyes, with the US having a percentage of around 27%. Scientists believe that all blue-eyed people can be traced back to a common ancestor, who probably had a genetic mutation that reduced their melanin in the iris.

https://worldpopulationreview.com/country-rankings/eye-color-percentage-by-country

Which country has the most colored eyes?

Blue eyes are rare globally, but 89% of people in Finland and Estonia have them. Among those with green eyes, 75% come from Scotland or Ireland