1950s, 1960s pop culture, pop art background. seamlessly repeatable

1950 1960 50s 60s andy art artistic background blot circles comic culture diffusion dots dotted duotone fade freckles gradation half halftone lichtenstein mezzotint opart pattern point pointillism pointillist polka polkadots pop popart rectangle red repeat repeatable roy scatter seamless shade speckles spot stipple stippling texture tone vector warhol warhole yellow