People have a tendency to associate colors with where these colors appear in nature. So,for example,without realizing it we associate soft shades of blue with the sky and sea. These associations make blue a calming color for most people. Asuka Obata runs a spa in Kyoto,Japan. All the walls of the salon are blue. Obata says," It is essential that we create a sense of peace and tranquility. The colors blue helps us achieve this