 When viewing variations on original artwork, such as the manipulation of the red, blue, and yellow areas of color in several Piet Mondrian paintings, design-trained and untrained participants successfully identified the balance centers of each variation.Both groups were sensitive to the distribution of color, weight, and area occupied.Expertise (see Art and Expertise) does not seem to have a large effect on perceiving balance, though only the trained participants detected the variation between the original work and manipulated versions.