[Request] Police Chat Channel

Is there any possible way, that we could have a simple /cop command to change their chat name to blue and signify that they are a cop while playing, and then change back to normal white with like a /off command, or is this not possible. Trying to keep it in the same chat. Just trying to help users know whos who. I know you can change the chat color while in game but any ways to manual set if they are /cop to add the ^5 to their chat name until they are off duty