backdrop background colour colours grunge grungy hue hues rust rustic rusty shade shades spatter spatters surface texture tone tones variations metal metallic moo mooring oxidation oxide oxidize ring rusted rusting container flotation flotation level level number numbers sail scale ship transportation white abstract decay dust old painted splatter spots stained wall weathered abandoned car detail old car rusty metal rusty texture scrap metallic texture old metal city metal plate rusty meta rusty plate urban urban decay brown garden grass heavy.plants iron lawn roller stone