abstract background checker checker-plate chequer chequerplate grip industrial metal safety step tread work art blue blur bright cityscape clear design element metallic modern polished reflection shiny skyscraper structure structures texture textures backdrop brown color colorful colors colour colourful colours decoration decorative desktop ocher orange wallpaper arrow diagonal direction dynamic pattern patterns perspective shape shapes stripes symmetric triangle triangles triangular yellow architecture business facade green red black gray light macro round shine canvas grunge grungy hue hues paint painting shade shades tone tones