abstract art background beautiful canvas color colour cover creative design graphic green grunge grungy illustration marble modern paint painting paper pastel pink purple scrapbooking texture wall yellow angles appearance architectural architecture brown colors colours contrast contrasting corrosion corrugated corrugations dark decay deterioration elements external metal old perspectives rough rust rusty surface surfaces textures uneven variations wearing weathering aged antique ash asphalt backdrop brick brushed concrete corroded crack cracked cracks galvanized grey ground industrial painted pattern plate rasped scratch scratched stone stones tile vintage weathered above arched awning coloring colouring construction curve curved curves exterior fixed height high pane protection protective shade shape shaped shapes shelter style views walls window-frame window-frames window-pane window-panes window-protectors window-shade window-shelters windows