abstract architectural backdrop background barrier basic brick brick-wall bricks brickwork cement colored coloring colors coloured colouring colours constructed exterior external firm linear lines mortar perspective perspectives secure security smooth solid standard strength strong style surface surfaced surfaces texture textured textures traditional-brick-wall variation varied various wall walled wallpaper well-built alien blended blue bright brilliant cactus-like color colorful colour colourful decorative design interconnected interwoven light merge merged merging multicoloured patterns prickles Prickly purple rainbow-colors rainbow-colours red spikes spiky thick thin thorns thorny vibrant yellow adornments angles appearances architecture building city creatures crouching decorations demons Designs detailed deterioration dilapidated Dirt dirty elements fantastic fantasy features gargoyles gargoylish-creatures gothic gothic-creatures grime grimy grotesque grotesques heights heritage high historic masonry monsters mythical neglected old ornamental peeling-paint shapes stonework rectangular