This study examined how the aesthetic evaluation of a colored shape is affected by its color and shape. Two groups of participants were asked to rate 8 shapes, 6 colors, and 48 colored shapes on three scales of aesthetic evaluation (beautiful-ugly, pleasant-unpleasant, and like-dislike). We applied multiple regression analysis to the experimental data in order to predict the aesthetic evaluation values of colored shapes based on the evaluation values obtained for colors and shapes separately. The results indicated that the prediction was accurate, and that the shape component had a stronger influence than the color component on the aesthetic evaluation value of the colored shape. In addition, we discussed the effects of colors and shapes based on their physical features such as curvedness, regularity, complexity, and CIE-L*a*b* color feature.