does it have to be black marble? I love this marble chevron, but not sure how it would look w/your countertops?

I would strongly urge you to wait until the new tops are installed. it's much easier to get a visual.

Why not order a sample sheet of the marble, and try some others?

I love the wall color. any chance of changing the hardware to a soft gold, handle? or, they do have black and gold (see pic)

gave you a runner w/some of the greens/grays in it.

this tile is a forest green glass. you up for that option? floor/decor Verde Vetro glass.

Picket tile? btw, if you can add some wood accents somewhere, it looks great w/black

This 2x10 size is perfect for a backsplash. (can go either way)

what if you used a diff black material like a zellige or ceramic?

here's a zellige with white grout.

if you like the herringbone, they come in the 2x6. I did this one in my floor. Used charcoal grout

bedrosians makes it in a ceramic material. Cloe 5x5

comes in the subway size too.

I like this look and the size. 2.5 X 8", mallorca, ceramic, herringbone w/charcoal grout.

glazed brick?

matte finish, smaller tile

have you ever seen the Nabi Harlequin tile? comes in many colors, but they have a GunMetal and a beautiful Emerald Green. Tilebar has 5 samples for $5. I'd order some of these

https://www.tilebar.com/nabi-harlequin-gunmetal-ceramic-tile.html (home depot carries the same under Delphi-Ivy Hill tiles)

black and gray?

The dark green glazed options could be a contender.

there are plenty of other beauties too.

love it w/the gold accents though.

I'd wait until the countertops are in.

What temp are your bulbs? 3500-4000K is best for hue in the kitchen.