Player trading, follow and player name color


Is it possible to allow trade and follow between two characters, which are not from the same faction? I dont find anything. If i want to trade or follow i get a error message, because the faction is not the same.

Is it the Trinity Core or the Client that sets the colour of the player name?

Thank you for help!

You can allow chat,trading,speack,guilds betwen horde/ally and other stuff in worldserver.conf

If the realm is set to FFA, then the worldserver conf settings dont work.