Hundreds of muscles radiate from the chromatophore. Therefore, the distinction between these chromatophore types is not always clear. Each chromatophore contains pigment of only one colour. Each color is indicated by the three types of chromatophore cells&colon; erythrophores, melanophores, and xanthophores. In cuttlefish, activation of a chromatophore can expand its surface area by 500%. Similar genes could have made the photosynthetic species pre-equipped to accept the chromatophore. The plastid is often referred to as the 'cyanelle' or chromatophore. Inside the chromatophore cell of cephalopods, pigment granules are enclosed in an elastic sac. An extremely uncommon type of chromatophore, the cyanophore, produces a very vivid blue pigment.