Turning Brown Eyes Blue

It is now possible to change one's eye color in just 20 seconds under a laser. The procedure removes the pigment on the surface of the iris, making it clear. The blue color, as with the sky, water, and other blue eyes, is just a result of the reflecting light. Because this removes part of the body instead of just dying it, there is no way to go from blue to brown or any other color, yet.

http://www.thetimes.co.uk/tto/life/families/article3248714.ece