regular concentric circles violet purple gray green and dark blue

abstract art artistic backdrop background blue circle circles circular color colored colorful colors complex concentric conspicuous creative creativity dark decor decoration decorative design detail diamond endless ethnic extensive geometric graphic gray green illustration image lilac lines lozenge multicolored ornament ornamental ornaments ornate pattern patterned print purple regular repeat repetition retro rhombus round seamless shape style stylish symmetric symmetrical symmetry traditional vibrant vintage violet wall