The Color Contrast exhibit consists of a long table with a vertical backboard mounted at about eye level. This backboard supports four different sets of silk-screened panels. Each panel features two large squares of color which contain varying numbers of small squares of different colors. Along the front edge of the table are a series of paddles mounted in retracto-tubes. Each paddle consists of a plastic strip with an opening through a small square of color at the paddle’s end. Visitors use the paddles to compare the colors of the smaller squares on the panels. In some cases two small squares of the same color look different, while in others, small squares of different colors look the same.