set of watercolor backgrounds, stains. red, green, yellow, blue water color spots with splash, paint blotch, brush

abstract aquarel aquarell aquarelle art artwork background blot blotch blotchiness blue bright brush collection color colorful colorfull colour design drawing dry dye graphic green grunge hand illustration ink isolated paint pattern picture red set shape sketch smudge splash spot stain stroke texture textured vivid wash water watercolor watercolour wet yellow