In a famous neighborhood, the four great thinkers = Buddha/ Confucius/ Kant/ Socrates are enshrined in the Philosophyic Garden, they are represented by four colors of light (yellow / orange / blue / purple) and they illuminate the bathroom. I think the basic concept of philosophy is ” finding wisdom for people to live better.” So in the bathroom, the white colored walls are designed so that guests can look back at themselves and find themselves in their daily life. At first glance, the tiles of the walls look just white, but actually, they are made with different shaped and textured tiles, which represents the diversity of people’s individualities and their lives.