(1) The use of reflectors or reflective materials shall be discretionary.

(2) When used on buoys having lateral significance, red reflectors or retroreflective materials shall be used on solid colored red buoys; green reflectors or retroreflective materials shall be used on solid colored black buoys; white reflectors or retroreflective materials only shall be used for all other buoys including regulatory markers, except that orange reflectors or retroreflective materials may be used on the orange portions of regulatory markers.