Abstract: The surface of the color-changing object is composed of one or more display reservoirs capable of containing a fluid or granular solid. At least a portion of each reservoir is transparent or translucent. Each reservoir is connected to one or more color-storage capsules containing fluid or granular solid. To change the color of the object, a fluid or granular solid is caused to flow from a capsule(s) into a reservoir(s). The fluid or granular solid will then be visible through the transparent or translucent portion(s) of the reservoir(s), thereby changing the color of the obiect.