It's hard to even spot the tartan here, it's so subtlety incorporated into the décor: The throw pillows on the sofa are a muted tartan; they add a layer of casual upholstery to the heavy-on-leather room.
Built in shelving above a radiator...simply build cupboards around them. It HAS been done. I was wondering. What impact would this have on the shelves above? And the heat distribution?