As far as I know broker addons always have a label and a text to display.
I think Bazooka is best addon for Broker plugins. It has an option to display the titel of the broker - for plugins like this one where you normaly woud need to go into an instace to move it around. Also its possible to stripe colors to make all text white (but not your black one only the other one).However as I said I only use this name to move it around so don't care if its black.
For myself I changed the + and ++ to C H and N
Edit: and I'm not able to test it now but will it hide in raidfinder?