aged background boxcar decay grunge iron metal oxide oxidized paint peel peeling rust steel surface texture weathered angle angles appearances architectural architecture brickwork building city closed cracked cracks dark deterioration Dirt dirty discoloration discolouration disrepair elements exterior external grime grimy neglect neglected old open peeling paint unsafe urban decay windows abstract art bad blue border cement color concrete construction corrosion covered crack crackle craggy cuts damage design destruction green hopelessness industrial macro material messy ornament pattern retro rough ruined scene scratched stone structure textured torn urban vintage wall