The coloration depends upon subspecies: "O. g. garnetti" exhibits green-tinged reddish brown dorsal pelage. The ventral side is yellow and the terminal half of the tail is black. "O. g. lasiotis" has lighter and more gray toned fur than "O. g. garnetti." The ventral side is white and the tail's terminal end of the tail is only slightly darker than the rest with a white tip. "O. g. kikuyuensis" exhibits iron gray fur tinged with green on its back, flanks and limbs. The ventral side is yellow-white. The tail is usually light brown with the terminal quarter being black. "O. g. panganiensis" is reddish brown to gray lacking the greenish hints in other species, while the ventral surface varies from white to yellow. The terminal quarter of the tail is dark brown or black.