The pu甲 ose ofthis study is Io clarify relationships between estimation andcolorcomposition in streetscapes regarding the range of basic alld point colors in a collection of building walls . In the first experiment , building colors were gradually changed to determine the effect ofbasic co 且 orranges on estimation . In the secon ¢ thecolorof aparticular building was gradually changed to investigate the effect Qf the change in coloLThe basic colorranges which cause visual mity are hue 5R − 5Y, value 7 − 9, and chroma 1 −3 . The range of acceptable point colorvariance