How I color my bash prompt(s)

You can edit ~/.bashrc to change the color of your bash prompt.

Example:

For my user I use this string: (~/.bashrc) PS1='\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '

For root I use this string: (/root/.bashrc) PS1='\[\033[01;31m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '

the 31 provides the red coloring — a nice indicator of the elevated privilege.

For more details see this developerworks article: http://www-128.ibm.com/developerworks/linux/library/l-tip-prompt/