adopting color of surroundings adopting colour of surroundings alert back ridge blending in blending with the environment Camouflage color changing colour changing fast moving leathery looking lizard ridge ridge spikes scales spikes apocalypse black blazing burning cataclysm conservation destroy destruction dez pain earth ecology fire fire and brimstone flame flames futuristic heat hell hellfire hot planet red save the planet space symbol World xymonau across-the-river background blue bridge cars colors colours contrast contrasting freeway gray grey light movement outdoor outdoors outside ripples rippling river riverside scenery scenic shadow shadows shrubbery shrubs sunlight surfaces traffic transport transportation travel trees vegetation vehicles views water waterways amsterdam architecture building city composite engineering fixture holland hub material metal modern passengers platform public transport rail rails railway rolling roof station stock The netherlands track train urban voyage against the ceiling attached balloons blown-up bright bunched colorful colourful dark dark blue decorations helium filled inflated interior lighter than air reflection rounded rubber strings textures against the wall angles brightly colored brightly coloured doors handles lockers locks numbered numbers personal perspectives privacy pupils rings school school lockers secure security silver steel storage students wall abstract alien concept feminine girly graphic green heavens illustration love night ocean orbs pastels pink seas skies sky sphere spring texture valentine aeroplane airline airplane curved curves display energy engine exposed height high historic in-the-past interior-view machinery motor open opened plane power rotary strength strong traveling travelling appearance appearances artificial down-in-the-mouth expression expressive features frozen heraldic lion memorial monument old pitted public regal sad sculpted sculpture serious shaped sombre statue weathered