abstract art background black blur colour colourful fantasy green orange texture wallpaper brown color colors design eddy movement water white yellow angles facets graphic pattern red curve grate grating iron metal oxide oxidize rust steel copy space fold folded golden paper rectangle stationary abstraction blue colours cyan cloud clouds dawn evening night sky sunset abundance abundant coneflower Echinacea flower garden head many natural nature profusion summer brush brushstrokes clay colorful course crack grean paint rough strokes stucco