California Code, Business and Professions Code - BPC § 13481

(a) If any motor vehicle fuel or lubricant is offered for sale, but not under any brand, trademark, or trade name, the words “no brand” shall be used as the brand, trademark, or trade name designation.  The words “no brand” shall be in letters of gothic type with a stroke of not less than one-half inch in width, not less than three inches in height, and shall consist of red letters on a white background.

(b) This section does not apply to electricity sold as a motor vehicle fuel.