abstract background blended bubbles bubbling bubbly color coloration colored colour coloured curved curves decorative design details distinctive interconnected interlinked interwoven light liquid liquidy merging metals patterns perspectives rounded shape shaped shapes style surface surfaces surfacing texture textured textures thick thin vibrant wallpaper architecture elements garden rest seat shade Spain spanish stone wall beach complex pattern rill ripple sand sculpted wet ba1969 curve illusion lines optical paper rotation spin turn twirl flagstone handmade pavement saavem stones textura traditional