Adds a name and light blue color AI Private on the radio.

AI Private (144.7) now has its own name and color! 
The purpose of this is to allow the AI to more easily notice the difference between private and public messages.

![screenshot 2014-03-31 00 34 46](https://cloud.githubusercontent.com/assets/4955510/2564193/bd63e680-b898-11e3-8e12-5a82732b8613.png)