We have this tile on display at a couple of our Kohler Signature Stores in the Chicagoland area. This is a special tile sold only by Kohler with their Kohler Surfaces collection. It is called "Ashen Grey". Here is a link to our Kohler Signature Stores if you need help locating one: http://kohlersignature.com
Thanks for your question & please let me know if I can help further!
Studio41 Home Design Showroom