All parts, portions, units and materials composing a sign, together with the frame, background, supports or anchorage thereto, shall be maintained in a proper state of safety and repair and a proper state of preservation. The surface of all signs shall be kept neatly painted. [Ord. 519 § 1 (Exh. A), 2010; Ord. 378 § 2 (Exh. 1), 1999.]