backdrop background colour colours grunge grungy hues metal rough rust rustic rusty series shades surface texture tone tones variation variations burst hue pattern shade beams blue circles concentric disco dj kettle metallic radius reflection reflections saucepan saucepot shiny silver skillet spot rings tracks collage colors layers leaves patterns Speaker tattered textures torn various worn brick frame leaf natural nature paint paper papier photo sign spatters template wall copyspace music scraps sound vintage