abstract appearance background black blended brown checkered checks color colored colorful colour coloured colourful column columns decorative design details interconnected interlinked interwoven light linear lined lines matrix mosaic patterns perspectives row rows shape shaped shapes square squared squares style texture textured textures thick thin vibrant wallpaper blue coast coastal coastline contoured contours contrast contrasting edge edged edges geographic green marble marbling angled angles arrows detailed diamond-shapes pointed points red tiles wall analog colors colours communication connected connections dirty dusty electrical electricity electronic equipment gadgetry insulated insulation metal no-longer-in-use numbered numbers numerals old outdated plastic plastics pre-digital switchboard switches telecommunications telephones telephony unwanted useless weathered wires wiring worn coloring colouring contrasts cracks fissures flaws layered layers levels natural rock rock-face rockface rocky rough rugged sandy shade shadows stone strata stratum sunlight sunny sunshine surface surfaces veins coloration cushion-like ornamental ornamentation pink purple striped stripes carpet-like rust rusty bright geometric geometrical multi-colored Multi-Coloured ribbed ribbing vertical