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