abstract appearance background blended color colored colorful colour coloured colourful contrast contrasting corrugated corrugations dark decoration decorative design details geometric geometrical interconnected interlaced interlinked intertwined interwoven light linear lined lines multicolored multicoloured pattern patterned patterns perspectives shape shaped shapes style texture textured textures thick thin vertical vibrant wall blue checkered checks christmas horizontal wallpaper appearances bright checked colors colours painted smooth solid squared squares strength stripe stripes stripy surface surfaces undulating walls red green purple