abstract aqua atmospheric background blue color coloration colour contrast cooling dark dark-blue deep direction electric-blue flow glassy interconnected interlinked light liquid liquidy movement perspectives reflecting ripples rippling surface surfaces surfacing texture textured textures variations vibrant wallpaper water watery waves wet appearance colored colors coloured colours cool pattern patterned patterns smooth soft surfaced black black-white dot floral flowers orange polka-dot red snail square stripe symbol white yellow architecture brown city decay details door grunge grungy home house old paint peel plank urban wall wood