watercolor background. shades of cloudy sky.

aquarelle autumn background bleak blue boring brown chilly cloud cloudy cold color colour compose cool cut cutout dab dash day despondent detail dirty dissipation draught draughty drawing dreary drop dull dye fall freeze furrow gentle gloomy groove hint illustration image ink line melancholy mordant mournful nature notch nuance ocher ochre overcast paint rain rueful sad sadness season shade sienna silhouette sky smear smudge soil space stain streak stria stroke tint tone touch trait vector warm watercolor window winter wistful