This tutorial will teach you something that I discovered pretty recently, and you may have seen being used.  Its colored server names!

1.  Start a server, if you don't have one running already.  Remember the server name.

2.  Open the console with the tilde (~) key.

3.  Type this into the console...

$Pref::Server::Name = "[RTB] *Color**ServerName*";

where *color* can be...
\c0 - black
\c1 - red
\c2 - white
\c3 - white
\c4 - pink
\c5 - blue

and  *ServerName* is your server's name.

4.  Push enter, and close the console with the tilde key.

Please be aware that this does add 3 characters to your 18 character server name length limit.