background beach complex curves pattern rill ripple sand sculpted texture wet abstract appearance black blended checks color colored colorful colour coloured colourful curved decorative design details interconnected interlinked interwoven light linear lined lines mosaic patterns perspectives shadows shape shaped shapes squares style textured textures thick thin tiles vibrant wall wallpaper bubbles bubbling bubbly coloration distinctive liquid liquidy merging metals rounded surface surfaces surfacing ba1969 curve illusion optical paper rotation spin turn twirl flagstone handmade pavement saavem stone stones textura traditional