halftone wavy grunge background. faded grain gritty textured wallpaper. black and white comic noise grit surface

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