Interior design for an airport lounge in Singapore Changi Airport Terminal 1. We understand that colour affects people and spaces in many ways. Red raises a room’s energy level. In public spaces, red draws people together and stimulates conversation. In a lobby, it creates a strong first impression. We have chosen red as the theme for the lounge and entrance lobby. For private spaces where occupants rest and relax, a dark fuchsia is chosen. The colour appears muted, rich and elegant as compared to the vibrant red. This creates a clear separation between private and public spaces.