Clever colours: Lessons in tone from a 9,600 sq ft duplex penthouse

The perennial challenge with big houses lies in making them feel cosy; the expanse of space can quickly make a home feel cold and uninviting if not handled well. 

One might think simply adding furniture would make things work, but that can all too quickly devolve into a cluttered mess. The trick, we've learned, is strategic use of colour.