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 amber color colors colour colours dark decay deteriorating deterioration discoloration exposed external gray grey lined lines neglected orange painted panel rectangle rectangular shadow shadows streaked streaks sunlight textures urban-decay wear worn