cloud clouds dark formation grey rain sky storm thunder weather Australia blue buildings castle light lighthouse silhouette tower airplane business electricity factory industry lisbon museum Portugal work aura backdrop background clouded color colored colorful colors colour coloured colourful colours desktop massive meteorology mood moody Morning nature pastel ray rays shine shiny skies soft stratus structure structures summer sunrise texture textures wallpaper apocalyptic appearance black contrast contrasting dark clouds darkening darkness disturbing dramatic dusk evening foreboding formations frightening gray layers levels lighting stormy sunlight threatening wild afterglow atmosphere atmospheric bright brilliant fiery flaming glory gold golden natural red setting-sun shining spreading sun sunset