aquarelle and gouache rainbow drawing vertical line on paper

abstract ambient amorphous aquarelle art artistic background bright byhand clear color colorful colors colour colours craft crafting create creative draw drawing dyes easy flow garish gouache green grunge handpainted hobby ink light ligth lilac liquid mauve mix mixing motley multi multicolor paint painting paints paper paperwork patchy pigment purple rainbow simplicity smooth splash texture tone transparent variegated watercolor watercolour watery yelllow vertical line palette exercise palette