This plugin is made for when at first, you allow /nick on your server, but then you disable it, and make it cost money. Basically it removes the nicknames from all the players who aren't op, or don't have a specific permission.
All of these permissions work to disable the nick-remover for a specific player:
Just drag 'n' drop the jar into your plugins folder, then reload the server! :)
To change the default color for the names, go in your config file, and modify the value to what color you want!
Any bugs you find, please comment in the project! :) Thanks! :D