Ronnie DeThomas has lived in his Buford home for 15 years, and in that time he has renovated almost every space — basement, bedrooms, bathrooms — infusing each one with a modern look. The final piece of the design puzzle was the kitchen. Dark mahogany cabinetry and black countertops cast a drab environment. DeThomas later added a small square island for more cooking space, but it competed for real estate with the space’s original L-shaped island.