I can only think of the Johnsons Kerastar Rocktop 20x20 in:
Graphite (RT515) (dark grey)
Granite (RT517) (light/mid grey)
and for the white.............. ummmm.......... not one in the same finish. But Hail will be the closest (RT509)
I also know that Keope did similar, but can't recall if they had 200x200, but worth checking them out.