halftone rippled grunge background. fading grain gritty texture wallpaper. black and white noise grit surface. pixelated

dot background gradient grunge comic bitmap pixel pattern manga grid overlay duotone cartoon texture semitone retro halftone book speckle anime sand vector vintage dust bg rough dirt spot snow grainy print fade rust distress dirty gravel particles grime messy granules old rippled wave wavy grain gritty grit noise vanish