# ref: http://bit.ly/fN2ep8
  # http://twitpic.com/3rr8dk
  def sass_colors
    engine= Sass::Engine.new(File.read("app/stylesheets/_colors.scss"), :syntax => :scss, :load_paths => ["app/stylesheets"])
    environment= Sass::Environment.new
    engine.to_tree.children.each do | node |
      next unless node.kind_of? Sass::Tree::VariableNode
      node.perform environment
    end

    @sass_vars= environment.instance_variable_get("@vars").reject{|k| k == "important"  }
  end