abstract background black burn burned color colour decay grunge grungy metal orange red texture urban city colors iron rust rusty steel bar teexture textures urban decay corrode corroded corrosion crack cracked decaying mildew mold paint paint peeling peel rusting wear and tear colours design desktop dez pain element fill graphic illustration pattern scrapbooking shapes xymonau blue bodgie bright colorful green light lights neon dark gloomy gothic gray natural nature rural stone dead grave brick building strong tile wall cold coloration cool gaps icy layer outline outlined outlines partial slippery smooth surface surfaced surfaces surfacing tactile textured thick thin uneven