Something about grey works just perfectly for kitchens. The color teeters between a relaxing neutrality and an exciting warmth, managing to provide the best of both worlds. Of course, depending on what shade of grey you choose, your kitchen could be closer to one end or the other.
One popular option is grey and white kitchen cabinets, which creates a gentle contrast. You can go for grey cabinets and a white countertop or grey lower cabinets and all-white upper wall cabinets.