crack dust glass grime texture abstract appearance background breaking through brown colored coloring colors coloured colouring colours contours contrast contrasts cracked cracks fissures flaws layers levels light lines natural ribbons rock rock-face rockface rough rugged shade shades of color shades of colour stone strata stratum sunlight surface surfaces textured textures veins wallpaper cement effects pink rocks tiles concrete board fence grain knot red stripes wood crackling paint wall composition nature vegetables ba1969 bound broken chains grunge pattern torn backdrop brush chaos concept damaged decay element fill grungy marks mask metal old paper scratches shapes stains wear and tear worn