Indiana Code Title 10. Public Safety § 10-11-2-18

Sec. 18. (a) The superintendent shall file with the secretary of state a drawing or photograph and a worded description, including the color, of the official uniform hat and insignia to be worn by state police officers while on duty.

(b) A person who wears or uses in public the hat or insignia or any imitation, reproduction, or facsimile of the hat or insignia, except an appointed member of the department authorized by the superintendent to wear the hat or insignia, commits a Class C infraction.

(c) After the drawing or photograph and worded description of the hat and insignia are filed with the secretary of state, the hat and insignia may not be changed by the department.