(a) Notwithstanding any other provision of this Constitution, no bill shall take effect as an urgency statute if it authorizes or contains an appropriation for either (1) the alteration or modification of the color, detail, design, structure or fixtures of the historically restored areas of the first, second, and third floors and the exterior of the west wing of the State Capitol from that existing upon the completion of the project of restoration or rehabilitation of the building conducted pursuant to Section 9124 of the Government Code as such section read upon the effective date of this section, or (2) the purchase of furniture of different design to replace that restored, replicated, or designed to conform to the historic period of the historically restored areas specified above, including the legislators' chairs and desks in the Senate and Assembly Chambers.

  (b) No expenditures shall be made in payment for any of the purposes described in subdivision (a) of this section unless funds are appropriated expressly for such purposes.

  (c) This section shall not apply to appropriations or expenditures for ordinary repair and maintenance of the State Capitol building, fixtures and furniture.