blue cloud clouds colored colors coloured colours conditions contrast dark darkening darkness disturbing dramatic formations gray grey heavy light lighting moody Morning movement perspectives shapes shining skies sky spreading sun sunrise textures variations various cloud formations weather abstract appearance Australia background fine fluffy puffs southern spread thin vaporish vapourish various-cloud-formations white wispy blue-sky feathery patterns streaky warm angled angles atmosphere atmospheric blended cloud-formations direction directional lines meteorological-phenomenon rib-like ribcage ribs extremely-hot heat hot summer