My OS X prompt

.bash_profile

# set prompt
export PS1=`ruby ~/bin/master-prompt.rb`

master-prompt.rb

require 'rubygems'
require 'geek_painter'

master_piece = GeekPainter.paint do
  label "# \\t ".in(:white)
  #label "[".in(:brown)
  #label "\\u".in  :light_gray
  #label "@".in    :yellow
  #label "\\h".in  :light_gray
  #label "]".in(:brown)
  label "($(rbenv version-name))".in :red
  label " [$(echo $HEROKU_CLOUD)]".in :blue
  label " \\w".in :default
  label "$(__git_ps1)".in :yellow

  label "\\$ ".in :default
end

puts master_piece.prompt