Even darker colors can help create a compelling effect in small spaces. In this Berlin apartment, the kitchen cabinets benefit from a pop of rosy color, a custom hue. Designer Peter Fehretnz advises picking a variety of tones within a single colorway for paint and furnishings: "If you choose red, use a mix of reds—some should be more yellow, others more blue or more pink. Colors appear especially vibrant this way, and they won’t clash." Photo by Peter Fehrentz. Photo by Peter Fehrentz.