({
  header: function () {
    return 'Colors';
  },
  item: [
      {name: 'red', current: true, url: '#Red'},
      {name: 'green', current: false, url: '#Green'},
      {name: 'blue', current: false, url: '#Blue'}
  ],
  link: function () {
    return this['current'] !== true;
  },
  list: function () {
    return this.item.length !== 0;
  },
  empty: function () {
    return this.item.length === 0;
  }
});
