my colored .bashrc

.bashrc

alias grep='grep --color=auto'
alias ls='ls --color=auto'

#PS1='\[\033[1;36m\]\u\[\033[1;31m\]@\[\033[1;32m\]\h:\[\033[1;35m\]\w\[\033[1;31m\]\$\[\033[0m\] '
git_branch () { git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/'; }
BRANCH='\033[00;33m$(git_branch)\033[0m'

PSC() { echo -ne "\[\033[${1:-0;38}m\]"; }
PR="1;36"       # default color used in prompt is green
if [ "$(id -u)" = 0 ]; then
    sudo="1;31"     # root is red background
  elif [ "$USER" != "${SUDO_USER:-$USER}" ]; then
    sudo=93     # not root, not self: red text
  else sudo="$PR"   # standard user color
fi
PROMPT_COMMAND='[ $? = 0 ] && PS1=${PS1[1]} || PS1=${PS1[2]}'
PSbase="\[\033[00;35m\]\A|$(PSC $sudo)\u\[\033[1;31m\]@\[\033[1;32m\]\h:\[\033[1;35m\]\w $BRANCH"
PS1[1]="$PSbase$(PSC "0;92")\$ $(PSC)"
PS1[2]="$PSbase$(PSC "1;31")\$ $(PSC)"
PS1="${PS1[1]}"
unset sudo PR PSbase

this is good stuff.
one small issue it starts to wrap line when the length of prompt ends. I added a line stty columns 1000 before PS1 to fix it.