above abstract aeroplane airplane appearance below between blue cloud cloud-formations clouds colored colors coloured colours conditions dark flight formations gray grey high in-between layers levels light multi-level patterns plane shadows shapes skies sky sunlight textures travel up-above variations variety various various-cloud-formations weather weather-indicators white aging appearances architectural background color colour cracked cracks damage damaged decay derelict deteriorating deterioration Dirt dirty discoloration discolouration disrepair elements exterior external fading grime grimy lines neglect neglected old old-building paint painted peeling peeling-paint rust rusty surface surfaces texture uneven upkeep wall weathered worn