changing prefix color / Text!

Hey! I recently picked up a src which was not made by me but just wanted to add a few new touches to it. Its a pretty simple program but in CMD when I run "pm2 logs 0" Which shows me the logs of everything that happens in the game chat (It is a bot that runs all automatically through minecraft) The logs that are shown in the chat all have this same prefix that I was trying to change but genuinley cannot find it anywhere. I will attach an image of what I am trying to replace. I want to change the "0|racro" Text I have searched with ctrl + f "Racro" or "0|racro" even with the ' but cannot find it. ^ Might be a stupid question but im a beginner and im struggling haha. I dont know if this makes any sense to any of you but hopefully someone understands <:Prayge:1063639125523177574>