halftone dot seamless pattern. gradation dots. faded black polka on white background. fades gradient point texture for opacity eff

abstract art backdrop background black circle circular comic dash dashed dashes design desktop digital dot dote doted dots dotted dotty effect fade fadew free geometric gradated gradation gradient graphic grid grunge half halfton halftone halftones illustration modern monochrome noise opacity overlap overlapping overlay overlays patern paternity paterns pattern patterned patternes patterns perforated perforation pixel point poka polka polkadot pop popart print repeat round screentone seamless simple square stipple stippled stippling texture thick thin tone tones vector wallpaper white