abstract affected appearance background bolt bolted color coloration colors colour colours connected faded fading green green-sheetmetal joined light metal mottled mottling paint painted ribbed ribs shadows sheetmetal strength strong sunlight sunshine wall weathered weathering chalk handwritten markings rust scribbles art artistic backdrop blended bright colored coloured corrosion dark decay decorative design detailed deterioration edges edging image interconnected lines multicolored multicoloured patterns rough rusty shapes style surface surfaces surfacing texture textured textures uneven variations vibrancy vibrant wallpaper wearing