abstract aged aging background brown chemical corroded corrosion damage damaged dirty distressed ferrous frame grunge grungy hull industrial industry iron macro metal metallic old oxidation oxide paint peel peeling pitted plate reaction red retro rough rust rusted rusty scrap stain stained steel texture urban weathered weathering daub decay door flower splash worn yellow board boards grain plank planks surface wood barbed fence point sharp wire crack cracked cracks decal random biar gate knot Spain Stump textures timber tree