I have a small galley kitchen, with gray/blue slate tile floors, white cabinets and appliances, absolute black granite counters. Right now the walls are a light blue, and the room feels cold. I'd like to warm it up with some color, but I'm not sure what would work and can't seem to find any good photos on Houzz to give an idea. The rest of our house is going to be gray/neutral, so would be open to introducing some pop of color in the kitchen. Thoughts?