Blue Eyes: A Mutation?

The Telegraph posted an interesting article about the origin of blue eyes in the human race. According to the article, scientist believe that blue eyes originated in an area around the Black Sea region which can be the north part of Afghanistan today. Supposedly, all humans had brown eyes until six - ten thousand years ago when a mutation suddenly occurred in a gene called OCA2. This gene is responsible for producing the melanin pigment that gives eyes their distinct color. The mutation "turned off" the production of enough melanin needed for a brown color which resulted in a "diluted" version that looked like blue. If this is true, all the blue-eyed people in the world today descend from one person who experienced the gene mutation. Wow!