Question for Armando : The blue eyes gene

I´ve read in some different places that scientists have found that all humans with blue eyes are all descendants of ONE single person that lived some 8,000 years ago.

This is to say, that in the same way that it´s been proved that we are all descendant of a genetical "Adam" , and a genetical "Eve", similarly all blue eyed persons in history are all descendants of one single human being whose DNA experienced a mutation resulting in the blue color in the eyes.

For some time I asumed it was just a fact , an interesting fact for that matter, but on second thought I´ve started to think that there´s a lot of misinformation in the media and that it should be better to ask someone more documented about DNA real facts and findings, so I would be thankful if Armando gives us his opinion on the subject.

Best regards for all !