Nowadays, the contact lenses are not only a vision tool but also a makeup tool for people, especially young people. They usually wear contact lenses to make outstanding eyes. For girls, the black ones are the best choice, because they can enlarge the eye shape to make it more beautiful. Or the dark blue ones are a good choice, which can make the eyes deeper. The grey ones can be considered as well, because of this color is closer to the eyes' naturally color, which couldn't be seen obviously. However, the contact lenses shouldn't be worn for a long period, especially the colored ones. The various colors are added on the surface of lenses to harm the eyes. Hence, you should choose some branded color contact lenses if you have to wear them.