This article from HGTV features photos of 10 different bathrooms with examples of designs and flooring types.   I loved the colors of this light grey tile, it gives the room a sophisticated, contemporary, elegant feel. Featured also in the article are examples of Pebble flooring, Exotic Marble, Various types of Ceramic Tiles, Bamboo flooring, River Rock and Concrete Tiles. Thought it was a great pictorial example of what’s out there if you are thinking of a bathroom remodel or new construction.  Also consider the option of radiant heated floors, they are economical in the long run from an energy cost stand point and cozy on the feet at night when you have to get up!

http://www.hgtv.com/walls-doors-and-floors/8-flooring-ideas-for-bathrooms/pictures/page-4.html