black dark concrete wall background. pattern board cement texture grunge dirty scratched for show anthracite promote product urban

background texture black grunge concrete dark board anthracite dirty pattern floor wall grey paper abstract scratched urban paint wallpaper blackboard stone retro cement old design vintage decorative rough element structure material surface aged grimy solid construction blank textured detail antique stucco weathered decoration blemish dot empty shabby backdrop grungy hard background show promote product decor