abstract angled angles backdrop background blended blue bright color colored colorful colors colour coloured colourful colours decorative design details geometric geometrical interconnected light linear lined lines patterns perspectives pink purple shapes striped stripes striping style texture textured textures thick thin vibrant wallpaper appearance brown dark decorated decoration interwoven nostalgia nostalgic old old-style patterned shape shaped soft squared squares vintage appearances checked checkered checks contrasting horizontal interlinked intertwined solid strength stripe stripy surface surfaces vertical