MMAC brick wall

They have built the wall where my mural will go on the Montana Museum of Art & Culture. They got the height of the niche and the height off the ground exactly right, which is a huge relief to me. I haven’t heard the length dimension yet, but I’m assuming they got that right too. It looks like it. The niche is 1” deep, so the tile and thin-set will fill about half of that, so there will be a very slight shadow line. And that gives me about a 1/8” grout line. I’m thinking a dark grey grout, pretty much like the brick color.