The present application is directed to a color changeable carrier constructed from at least one dye-laden material, wherein the dye-laden material is treated in a manner effective to provide one or more first visible colors under predetermined ambient conditions and one or more second visible colors under different predetermined ambient conditions. The upper container acts as a reservoir and holds a liquid. One side of the eyepiece lens 132 close to the crystal balls 2 has an aspherical shape of a Conic surface and a Conic coefficient of the Conic surface is \u22121 and less. The spatial autocorrelation is calculated for image frames produced by the camera.