abstract background blue feather feathered grunge iron metal metals old oxide rust rusted rusting rusty steel structure tecture texture wheathered yellow backdrop structures textures violet wallpaper coarse diamond plate diamondplate industrial non skid plate rough San Francisco sidewalk surface urban black border computer copy space electronics frame futuristic graphic green illustration modern scrapbooking screen shiny sleek techno white bent building color colour corrugated dented lines painted shack shed sheet stripes tin wall wavy concept creation design elegant fill foil gleam gradient image metallic New original pink reflection satin shine silver square style gold vertical ancient damage damaged eroded erosion industry paint red scrap scrapyard scratch scratched weather weathered