The lunar part of the moon has little color and appear darker to the eye. It is not Grey or white in color as it appears viewing from the earth. You can find more information here: http://www.rc-astro.com/photo/id1018.html
If you look at the moon during the day, it will appear to be sort of white in color, but at night, the moon usually appears yellow. However, pictures taken of the moon from outer space show its true color to be gray and also shows areas of the moon that has rocks that are greenish in color.