Abstract: A packaging display system includes a first set of cartons packaging a first group of products and a second set of cartons packaging a second set of products. Each of the sets and groups are divided into subsets and sub-groups. The products of the first group are selectively matable with the products of the second group, with only some of the first sub-groups products properly mating with only some of the second sub-group products but not with other products of the second sub-groups. Color coding is provided on the cartons for indicating which of the products of the first; sub-groups properly mate with the second sub-group products. The color coding includes patches of different colors with a same color patch appearing on the cartons of the first and second sub-groups packaging products of the first and second sub-groups which properly mate.