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Backsplash, not cabinet color
Could have the same look with the cabinets dark.
May be too dark and too much color variation
I would use the larger tiles than these (3 x 6 or 4 x 8). This get too contemporary looking, but it does give you a good full view of this kitchen.
Wrong cabinet color and definitely wrong style, but these are tumbled marble tiles and would work for you if you have some beiges coming in and not all grey.