I wish I could meet whoever did the install since it has to be one of the best tile jobs in history. The grout is white but like the other bath with the same tile job in the house it still looks like the day it was installed, even the showers. The other location is in my kids bathroom put in by the PO just after WWII. We put it in almost 20 years ago and the light grey grout does not show dirt or stains despite a lot of reckless use.
Tile was a great choice for us for a variety of reasons including cost, ease of install and durability. One is in my lake cottage kitchen - it is about 80 years old and it is pretty close to original condition with few cosmetic upgrades.
I have 4' ceramic tile in two counterop locations.