You can actually customize the prompt for your BASH shell however you wish.
For the login shell (when you first boot up your computer, if it boots to a shell):
it will first read and execute commands from /etc/profile, ~/.bash_profile, ~/.bash_login, and ~/.profile
For an interactive shell that is not a login shell:
it will read and execute commands from ~/.bashrc
So, to change the prompts for your BASH shell, just edit the "PS1=..." entry in one of those files (if they exist).
This is a useful guide:
http://www.ibm.com/developerworks/li.../l-tip-prompt/
