I noticed that your dining room has white walls too. Are you planning on painting all of the ajoining rooms to the kitchen? What colors are the furnishings in your home? You want to choose a paint color that will also go with the other things you have in your home. I can't pick out an exact shade without being in your room because it's difficult to tell from the photo what colors are in the backsplash and granite but I'm thinking a light grey or tan might work. I suggest going to the paint store (I prefer Benjamin Moore) and bringing home some samples and painting them onto white poster board. This will give you large color samples to help you visualize what will work in your space without painting it onto the walls. By the way, you have beautiful kitchen.