title: How to change the border color of all tables in a Google Document?
body: <p>I'm trying to set the border color to white for every table in my document using the script below, but even though <code>getColor()</code> returns <code>'#ffffff'</code> for each table, table borders remain the same in the actual document.</p>
  
  <p>How can I get it done? And why does the code fail?</p>
  
  <p><code>function whiteBorders() {
      var body = DocumentApp.getActiveDocument().getBody();
      var tables = body.getTables();
      for(var i in tables) {
          tables[i].setBorderColor('#ffffff');
      }
  }</code></p>