The Shibuya City Office project found its themes in festa, chic, purity, and refinement. Green was chosen as the predominate colour scheme to portray purity throughout the public complex. Each floor of the Shibuya City Office adopts its own unique shade of green in the pursuit of a floor plan that is able to smoothly lead people visiting through the complicated structure to exactly where they want to go. The gradual dark to light colour gradation from the ground to top floor gives both a visual and intuitive awareness to where one is. Thanks to this plan aiming to guide foot traffic not only by written information but also a colour scheme, anyone can smoothly navigate the building to their destination following the colour assigned to each floor.