You should make all your final decisions on cabinets, granite, etc. BEFORE making a final decision on a backsplash. BA can be tricking because there are alot of variations. Pick your slab then your backsplash. There are alot of photos here on GW of BA aka white diamond with backsplashes. I just posted a peak of my back splash in the "backsplash" thread.

Thanks for the update, glad to hear you are liking it. Now as to grout - that's another decision. Using double-sided sticky tape, adhere leftover tile pieces to a smallish piece of plywood (or other - shouldn't be flexible). You want a smaller piece, so it can fit under your uppers and rest on the countertop. Then, mix up a small batch of your grout choice and slap on to your sample board per directions. Clean up and wait a day to let the grout color dry, then see how you like the effect. Take pictures of it in place, then chip off the pieces of tile (hammer and screwdriver) (very easy), and repeat with next grout sample if desired. If you have enough left over tile, do multiple at the same time. To give you an idea, here are some I did recently. These were just grouted.

Your choices are lovely. Since I recently did my kitchen, so I share your backsplash pain. A couple of thoughts: Grout samples of smaller tiles that you’re considering and see how you like the look before you commit. There was a mix of grey and white marble mosaics that I liked - until I saw a grouted sample. The reason my contractor and I decided against arabesque is that the spaces between the tiles won’t be even - look very closely at example photos - so it would take a lot more work to do properly, especially since I wanted colored grout. The size of the tiles also varied slightly. Oddly, this was true even on large machine made arabesques. I didn’t want to spend the time and money on them. After much searching, I have the spirit of arabesque (married to Mod?) in these Walker Zanger tiles, which I really like. I’m not suggesting these as an option for you - the colors are very limited - rather to give you ideas about alternatives to arabesque.

Hey we have almost the same kitchen layout! I would take a cabinet door & a dark knob/pull to a stone yard and see what looks good. There are so many counter choices out there so sometimes it just takes seeing that one stone that fits your vision to pull it all together.