The colors depend on the service branch (armă, literally "weapon") the bearer is a member of.
Other militarized institutions, such as the Romanian Gendarmerie and the Military Firefighters Corps, also have branch insignia worn in the same way.
The rank insignia is worn on the shoulder of the jacket, cloak/coat, overcoat, and shirt.
The junior NCOs, enlisted and the navy warrant officers use yellow silk braids.
The navy warrant officers use yellow colored star insignia as well.