multicolored textured background in shades of purple, gray and green. chaotic paint spots on canvas. mixed media

abstract acrylic art background blot brush brushstroke canvas cement chaotic concrete dirty dotted drawing drawn dust dye gradient grain gray green grunge hand illustration ink material media mixed modern multicolored noise ombre overlay paint painting paper pattern plaster purple rough sand shades smear smudges spot spots spotted spray stain stone stroke stucco surface texture textured vintage wall watercolor