trees against the sky

abstraction azure background black blackish blind blue browed brown cimmerian dark darkling darksome deep dingy dun dusky empyrean ether foggy gloomy grain grave heaven kind low lowering mafic mirk mouth murk murky nature negro obscure occult opaque palate recondite roof sable sad shadowy sky solemn somber sombre sphere subfusc swart swarthy tenebrous textures the tree trees unlit welkin wood