blue cloud clouds colored colors coloured colours conditions contrast fine formations gray grey heavy light lighting movement perspectives shapes shining skies sky southern spreading sun textures variations various cloud formations weather white adult-poultry Australian bird casual chatty colloquial common communication conversational cracks everyday expressions familiar friendly hen iconic idiomatic informal language meaning mosaic natural new zealand non-literary orange popular poultry Rooster slangy unpretentious vernacular weathered word cauliflower clouds cauliflower-like compacted cumulonimbus edges strong thick