Change bash prompt (for Mac)

.bash_profile

# export PROMPT="\[\e[0;32m\]$PS1\[\e[m\]"
# export PROMPT="\[\e[0;33m\][\u@\H:\w]\[\e[m\] \n\[\e[0;32m\]\$\[\e[m\] "
# export PROMPT="\[\e[0;33m\][\u@\H:\w]\[\e[m\] \n\[\e[0;32m\]$(echo -en '\U1F363') \[\e[m\] "
# export PROMPT="\[\e[0;33m\][\u@\H:\w]\[\e[m\] \n\[\e[0;32m\]$(echo -en '(´･Д･)')\[\e[m\] "

# ref. http://stackoverflow.com/questions/16715103/bash-prompt-with-last-exit-code
function __prompt_command() {
  local EXIT="$?"

  local ColRed='\[\e[0;31m\]'
  local ColGreen='\[\e[0;32m\]'
  local ColYellow='\[\e[0;33m\]'
  local ColEnd='\[\e[m\]'
  PS1="${ColYellow}[\u@\H:\w]${ColEnd}\n"

  if [ $EXIT -eq 0 ]; then
    # PS1+="${ColGreen}(´･Д･)${ColEnd}"
    PS1+="${ColGreen}(｀・ω・´)${ColEnd}"
  else
    PS1+="${ColRed}(´ ・ω・｀).oO($EXIT)${ColEnd}"
  fi

  PS1+=' '
}
export PROMPT_COMMAND="__prompt_command"