This pair of glasses designed by Luis Porem can change colors like a seven-color rainbow. It's a must-have item for fashion enthusiasts who love to change their looks with accessories. The principle behind this pair of glasses is that you can choose your favorite color of ink to fill in the glasses, black, red, green... You can change colors at will.
The article is from Creative Design Blog: http://www.chuangyishejiboke.net/?p=2665