Wood cabinets like yours (and mine) have movement due to knots, grain and varying color tones. The countertops also have movement. I would do a calm backsplash to give the eye a place to rest and prevent the area from becoming too busy. I went with cream subway tile, but mine is not a mountain home so i can see where you might prefer the stone.

This is mine:

[https://www.houzz.com/photos/my-pics-work-in-progress-phvw-vp~57088087[(https://www.houzz.com/photos/my-pics-work-in-progress-phvw-vp~57088087)

What is the floor going to be?

Floor is a handscraped hardwood.

I agree I would go with the less busy tile. An area to break the granite and cabinets, add calm. All in all it all looks great, but you dont want to take away from the beauty you have going on by over doing it. The granite is nice and the cabinets are gorgeous I think. I really like the simple back splash.

Too many clowns in the circus ring already. You need a plain cream tile for the splash, with matching grout. And they need to remove that stone splash that they tacked on there.

Check your cabinet placement. That little one here by itself looks like it will have clearance problems with the door once the hood is installed.

I am really leaning toward the honed crema marfil subway. The color is perfect and it will let the knotty alder cabinets and granite be the focal point.

Avoid doing sstone with stone. You need two dissimilar materials.

I disagree with the statement that stone shouldn't be used with stone. Tumbled stone happens to be a great accompaniment to granite and/or solid quartz countertops. Do a Houzz search for tumbled stone backsplashes and you will see it used with granite almost all the time. The "soft" edges of a tumbled stone give it a classic, time-worn look that won't go out of style.Tumbled stone also fits well with a rustic style home.

If you like the clean edge of the Crema Marfil tile that will give you a classic, traditional look. I used Emperador Light for my backsplash and had 12x12's cut in half and had it installed in a staggered (offset/brick joint) pattern. I love how clean the look it and it's a lovely backdrop for my kitchen space.

Lastly, you can leave the granite splash that meets with the peninsula, bar top. But, I would not use a granite splash in the remainder of the kitchen as it will interrupt the flow and vertical space between counters and upper cabinets.

I agree you can use stone with stone. Our current house has Tropic Brown granite with a beautiful tumbled travertine backsplash. My thought was that since the Netuno granite has more movement than my current granite I would let it speak for itself. I just haven't found a tumbled travertine in the right colorway and the honed marfil is a good contrast rather than being highly polished.

I purposely picked this granite - DH and I both love it and it works with our design scheme. The Master Bath and shower are quartz to mimic marble and is the calm area.

Also plan on using the staggered subway tile pattern and the short granite splash is only on that one wall on the island.