var cal = new Calendar('#calendar', {
  ...
  calendars: [
    {
      id: '1',
      name: 'My Calendar',
      color: '#ffffff',
      bgColor: '#9e5fff',
      dragBgColor: '#9e5fff',
      borderColor: '#9e5fff'
    },
    {
      id: '2',
      name: 'Company',
      color: '#00a9ff',
      bgColor: '#00a9ff',
      dragBgColor: '#00a9ff',
      borderColor: '#00a9ff'
    },
  ]
});