git-aware prompt with custom coloring

.git-prompt

function _fancy_prompt {
  local RED="\[\033[01;31m\]"
  local YELLOW="\[\033[01;33m\]"
  local BLUE="\[\033[01;34m\]"
  local WHITE="\[\033[00m\]"
  local GREEN="\[\033[36m\]"
  local GREEN2="\[\033[32m\]"

  local PROMPT=""

  # user@host$working/directory
  # PROMPT="\[\033[36m\]\u\[\033[m\]@\[\033[32m\]\h\[\033[m\]\$\[\033[33;1m\]\w\[\033[m\]"
  PROMPT="$GREEN\u$WHITE@$GREEN2\h$WHITE\$$YELLOW\w$WHITE"

  # Git-specific
  local GIT_STATUS=$(git status 2> /dev/null)
  if [ -n "$GIT_STATUS" ] # Are we in a git directory?
  then
    # Open paren
    PROMPT=$PROMPT"$BLUE($WHITE"

    # Branch
    PROMPT=$PROMPT$(git branch --no-color 2> /dev/null | sed -e "/^[^*]/d" -e "s/* \(.*\)/\1/")

    # Warnings
    PROMPT=$PROMPT$YELLOW

    # Merging
    echo $GIT_STATUS | grep "Unmerged paths" > /dev/null 2>&1
    if [ "$?" -eq "0" ]
    then
      PROMPT=$PROMPT"|MERGING"
    fi

    # Dirty flag
    echo $GIT_STATUS | grep "nothing to commit" > /dev/null 2>&1
    if [ "$?" -eq 0 ]
    then
      PROMPT=$PROMPT
    else
      PROMPT=$PROMPT"*"
    fi

    # Warning for no email setting
    git config user.email | grep @ > /dev/null 2>&1
    if [ "$?" -ne 0 ]
    then
      PROMPT=$PROMPT" !!! NO EMAIL SET !!!"
    fi

    # Closing paren
    PROMPT=$PROMPT"$BLUE)"
  fi

  # Final $ symbol
  # PROMPT=$PROMPT"$BLUE\$$WHITE "
  PROMPT=$PROMPT"$WHITE "

  export PS1=$PROMPT
}

export PROMPT_COMMAND="_fancy_prompt"

Add a line in your .profile file:
. {path-to-file}/.git-prompt