I'd love your opinion on whether you'd recommend a lighter grout or darker with my tile. As you can see from the picture of the tile, it has some shadowing and the edges are whitefish. (The tile is Bellavita tile H-Line in Pumice and the countertop is Pental Lattice) So a lighter grout would make the tiles look more seamless. But I kind of like the way the tiles look now…with a darker outline. My house is a 1932 Tudor. I'm not going for authentic (obviously, but more of a "new old") as my tiler says.
Personally I'm leaning towards doing a darker grout. Most of the historical older homes I've visited have a darker grout, then again "new old."

I'm grouting the whole wall (to the ceiling) not just the area that's being prepped in the photo. Tile will also to to the ceiling on the wall next to it that has the two narrow wall cabinets.

My tiler likes lighter grout and he says it's brighter. I'm not that worried about light as you can see I have four windows in the kitchen. Even for Seattle, the kitchen gets decent light year around.

Look forward to everyone's thoughts!
Thanks.