Interior Space and Exhibition Design Metro Salon by KUN-SEN CHANG Metro is an interior design for a hair salon in Taiwan. The layout is planned around a central color bar that connects all areas and supports the frequent movement of staff and equipment. The original concrete ceiling is retained and combined with gray and white walls, off-white ironwork and light gray polished quartz tiles. Saturated orange seats add contrast within the neutral tones. Two large floor-to-ceiling windows bring in natural light, and 5800K LED lighting evenly illuminates the working area for hair coloring.