Gray large format? What are doing for the vanity? What color do you the walls?

The vanity is 72”, modern design with a spessart oak finish. Three of the 4 walls are in the porcelain slab (each slab is 126” high x 63” wide). The third wall is to be painted - color TBD.

The large gray format I’m thinking of is per attached photo.

Grays are notoriously difficult to match, so be sure you see your samples side by side (and thus in the same lighting). If they match tonally, that should work. I guess you're using that large slab on all the actual walls, not just the shower walls? don't forget shower floor tiles if there's not a tub in this bath -- they need to be small.

Thank you. Any further ideas for the shower floor, and any alternative to the gray I’ve described herein? There is a freestanding tub in the room, separate from the shower (which is 6’ x 4’-6” and curbless).

Porcelain slab is on 3 of the 4 walls, not just in the shower.

There is a freestanding tub in this bathroom and the shower (approx 48" x 72") is curbless. Any suggestions for the shower floor (size and color) - should they be the same as the rest of the bathroom floor but perhaps slightly smaller?

Final product photos?