Cal. Welf. & Inst. Code § 7254

Notwithstanding any other provision of law, the State Department of State Hospitals shall have the authority to require that patients committed to a state mental health facility pursuant to Section 1026 of, and Chapter 6 (commencing with Section 1367) of Title 10 of Part 2 of the Penal Code, and Sections 6316 and 6321 of this code shall wear identifiable clothing in a secured area of the facility.