California Code, Business and Professions Code - BPC § 13599

No container, receptacle, pump, or storage tank connected thereto, or the inlet end of the fill-pipe of such storage tank, shall, however, be relabeled by the owner, manager, or operator, whether under the provisions of this article or otherwise, without first removing from such container, receptacle, pump, or storage tank connected thereto, or the inlet end of the fill-pipe thereof, all distinctive colors, brands, trademarks, or trade names thereon of any manufacturer, refiner, producer, distributor, or marketer, indicative of any product not actually contained therein and sold therefrom.