code: function() {
      var captures;
      if (captures = /^#([a-fA-F0-9]{3})[ \t]*/.exec(this.str)) {
        this.skip(captures);
        var rgb = captures[1]
          , r = parseInt(rgb[0] + rgb[0], 16)
          , g = parseInt(rgb[1] + rgb[1], 16)
          , b = parseInt(rgb[2] + rgb[2], 16)
          , color = new nodes.RGBA(r, g, b, 1);
        color.raw = captures[0];
        return new Token('color', color);
      }
    }
docs: #rgb