abstract background burst calm concept design element fill gradient graphic illustration paint pastel scrapbooking sunburst texture white yellow pink autumn colors colours desktop fall feminine gold green grunge grungy orange pattern Dirt dirty metal metallic panel panels rust rusty sand sanded spoil spoiled steel art blue blur burn color fire flame Fractal light red stripe swirly backdrop blank blocks border canvas colorful frame overlay paper squares thin cell charge communication connection electrical electricity lightning nerve power relay signal surge transfer brush brushstroke brushstrokes decoration decorative structure structures textures wallpaper black bonfire burning combustion hot live nature saavem smoulder