abstract art artistic back backdrop background black blur color concept cover creation creative design element energy fill focus Fractal futuristic graphic gray grey image light line lines motion New original pattern plaid render speed streak stripe style tartain technique technology texture unique vector wallpaper white blue pink purple diagonal geometric grunge hi res indigo tartan brown green red aqua dreamy high resolution swirl yellow aged board build closeup dark desk detail dirty exterior fence floor furniture grain hard hardwood house macro material natural nature oak old panel plank plate rough striped surface table textured timber tree vintage wall wood wooden