Coloring of anodized aluminum（alumite）with organic pigment was investigated. After alumite was prepared by anodic oxidation of aluminum in oxalic acid solution, pore-widening was done with oxalic acid solution at 323 K（50  ℃）. Then iron or nickel metal was deposited electrochemically in pores. Pigment particles dispersed by surfactant with an azobenzene moiety（AZPEG）were deposited in the pores by reduction of AZPEG with iron and nickel.