pop art, polka dot, circles dotted random pattern, texture and background

50s 60s andy art asymmetric asymmetry chaos chaotic circle density diffusion dot dotted dpi freckle grain halftone irregular lichtenstein macula miscellaneous mottle noise organic particles pattern pixelated pixilation point pointillism pointillist pop popart random randomness roy scatter scattered screentone speck speckle spot spotty sprinkle stipple stippling strew strewn texture vector warhol warhole