As hinted by berkes I learned from compass. These are the pointers and steps taken to install it.

http://compass-style.org/docs/
http://haml-lang.com/
http://sass-lang.com/tutorial.html
http://github.com/bangpound/compass-drupal-zen-plugin
http://ubuntulinuxhelp.com/installing-compass-on-ubuntu/

  513  sudo aptitude install ruby rubygems
  514  sudo aptitude install git-core rake
  515  sudo gem update --system
  516  gem -v
  517  sudo gem uninstall haml
  518  sudo gem install haml-edge