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As human become aged, he become color weak due to yellowed eye sight. The 87% of information required for human behavioral decisions are visually perceived. Therefore, the color weakness will affect his behaviors in many ways. Most of previous research regarding color planning for the aged people focuses on discovering their preferred colors and reflecting the colors on facility color planning. But these research failed to identify confused range of color cognitions due to the color weakness of the aged.In this research, targeting the aged in multi-purpose senior centers, we analyze their color distinctions and confusions using computer graphic tools. Our research discovers several important points. First, there are differences in color cognitions between the young facility designers/staffs and the aged facility residents. Second, these differences lead to the differences in the abilities of spatial cognitions between the young and the aged. Third, the difference in the spatial distinctions is mainly caused not by color itself but by color adjacencies. Based upon these findings, we propose that color planning of facilities for the aged be made not from the view of the designers but from the view of the aged, considering yellowed eye sight of the aged.