abstract appearance background brown colored coloring colors coloured colouring colours conglomerate contours contrast contrasts cracks fissures flaws grit gritty layered layers levels light lines mica natural rock rock-face rockface rocky rough rugged shade shadows shape shapes silicate stone strata stratum sunlight sunny sunshine surfaces texture textured textures veins wallpaper astronomy backdrop beauty big bang black blue bright cosmos cover creation dark deep space desktop dez pain fantasy field futuristic galaxy glory god graphic heaven illustration nature nebula night orange outer space red sci-fi science shiny sky space star starry time travel universe xymonau yellow