watercolor deep peacock blue old background. artistic teal blue-green backdrop. stains on paper, hand painted

abstract abstraction aged aquarelle art artistic backdrop background beautiful blue bluegreen bright calm color colorful contemporary dark decorative deep dirty drawing grunge hand illustration liquid mark material modern old overlay paint painted paper peacock retro soft splash spot stain stains surface teal template texture textured turquoise vintage wall wallpaper wash water watercolor watercolour watery