(a) The department shall administer this chapter and adopt rules necessary for its enforcement, including rules to assure that citrus fruit that has been treated with coloring matter does not unreasonably vary in color from the color of the best ripe fruit of the same variety generally produced in this state.
(b) The department shall enforce this chapter, and may direct and supervise the enforcement of this chapter through the operation of an inspection service organized under Subchapter A, Chapter 91, of this code.