Let their true colors shine. The Original rainbow features the bright colors of the rainbow, inspiring imaginative play and all-day fun. In addition to stacking, our sustainable and durable stones can be used in endless ways and are strong enough for sitting, climbing, and tossing. Offering open-ended play and multiple use cases, our Original rainbow makes an excellent addition to playtime and beautifully complements the homes they live in. Note: The classic set currently includes the color green instead of dark green.