Fwiw, I just mixed faux-marble quartz (Lagoon) with a Carrera backsplash and at least in it's pre-grouted state, I'm really happy. It was hard for me to find a backsplash that worked well with the grey-ish tones of the Lagoon, mostly because my cabinets are painted taupe. Anything that "matched" the cabinets seemed too brownish for the counters. The Carrera blends the two perfectly. I think it also works because I wound up using a very small-scale herringbone pattern, so the patterns in the marble tiles are less pronounced. Fwiw, I don't see the calacutta tiles that the OP posted working with a greyish quartz that's similar to Lagoon, and I'd also be concerned about pattern overload with a subway tile. But having worried about the fake-next-to-real problem, I wanted to at least add my experience that it can be done. One of the prettiest kitchens on here, done by a pro, is GW user @kompy, who used a different marble subway with Lagoon counters, and it looks stunning.

My first thought looking at your kitchen was jerusalem gold like sharb's kitchen assuming the color would work with your granite http://finishedkitchens.blogspot.com/2007/06/sharbs-kitchen.html But of course I was flipping thru the finished kitchen blogs trying to find the kitchen with the backsplash I was thinking of (which of course was near the end of the alphabet), I found two other ones Durago travertine mini-brick in beachlvr kitchen in the finished kitchen blog http://finishedkitchens.blogspot.com/2006/12/beachlvrs-kitchen.html Or Durango Split Face like epjenk's Kitchen http://finishedkitchens.blogspot.com/2007/06/epjenks-kitchen.html Here is a link that might be useful: Sharb's kitchen

So tired of hearing " but that will make it look dated" or "it wouldn't be good for resale" Everything is going to be dated at some point, the kitchen designers, cabinet companies and appliance companies make sure of that. Example: stainless steel appliances were just coming on the market 15 years ago when we gutted our kitchen for a remodel. It was hard for me to find stainless in my area at that time, I live in a small mid western town. So, have you noticed in the past few years appliance companies have been trying to bring out new colors, grayed looking stainless, now ice white etc. they are trying to make people think their stainless appliances are soon going to be "dated". But I have read in several articles that stainless is still the number one choice. I chose a cinnamon stained cherry wood for our new build. I thought about white because that is the trend right now, but I reasoned cherry cabinets will always be in style while the white trend Has just a few more years. I won't be a slave to trends. Just my opinion.

@Beth H. - thank you for your comments. I don't think we want to have dark counter tops. The kitchen is open to our family room. The minimal wall space in the kitchen will be painted a light blue color, as will the walls in the family room. We were thinking about: a) white cabinets and island b) the Calacatta gold marble 3" x 6" tiles for the back splash c) light(ish) counter tops on the perimeter and island (perhaps with some grey coming through d) medium brown hardwood floors We thought about using walnut for the island surface, but decided against it due to maintenance issues. If we didn't want to have dark counter tops, are there any other options? Thanks!