赭い[akai] red
代赭[taisha] red ocher
代赭色[taishairo] yellowish-brown
赭黒い[akaguroi] dark red

赭土[shado] red ocher
赭顔[shagan] ruddy face
赭熊[shaguma] yak hair dyed red

お歯黒[ohaguro] tooth blackening
暗黒期[ankokuki] eclipse period
暗黒時代[ankokujidai] Dark Ages
暗黒大陸[ankokutairiku] Dark Continent (i.e. Africa)
黒い[kuroi] black

黒い霧[kuroikiri] thick fog
黒くする[kurokusuru] to blacken
黒ずむ[kurozumu] to blacken
黒っぽい[kuroppoi] dark