A golf ball comprising a core and a multilayer cover including at least a cover inner layer and a cover outer layer is characterized in that the core has a hardness corresponding to a compressive deflection amount of at least 3. A target gray line to connect white to black for color separation is set in predetermined color space, the combination of color materials of 3 colors are obtained to realize a color on the target gray line, color material amounts of the primary CMYK colors are determined to realize the color on the target gray line, and a total color material amount is determined to realize the target gray line. The first layer includes first and second spaced apart top electrodes. The spacer has a support surface and an opposed surface.