Culturally, small variations in the choice of warm and cold colours have been identified. In the Thai survey (Sato, Xin & Hansuebsai, 2003), the cold shades are slightly cooler than the Japanese ones. The Thai warmest colour is a warm orange (red-orange) and the coldest colour a bluish green. The border colours between warm and cold, eg. the transitional nuances between yellow and green gave rise to unclear results.