title: How do I had vertical grid lines to an ag-Grid?
body: <p>I am trying to add vertical grid lines to an ag-Grid for angular 2 (making it a bit more excel-like).</p>
  
  <p>Do I need to make a custom theme (not use ag-theme-balham)?</p>
  
  <p>Does anyone have an example?  </p>
  
  <p>Any help would be appreciated.</p>