title: How To Change Background Opacity of Charts inside Google Sheets?
body: <p>I want to set the transparency or the opacity of the Google Charts in Google Sheets (just like in Microsoft Excel - set the image behind the text so the text still readable)</p>
  
  <p>However it seems the function is not working.
  <a href="http://drive.google.com/file/d/0BxAiEecsdp72bmJVMk1xUGVnTUk/edit?usp=sharing&#39;" rel="nofollow">Preview of the function</a></p>
  
  <p>Example <a href="https://docs.google.com/spreadsheets/d/1az_uTGgcVSPjKURBvYh3QZaZOYu7ocT2cbAqPpEF2r0/edit?usp=sharing" rel="nofollow">link</a> to my document.</p>
  
  <p>I have tried also with the apps script <code>setBackgroundColor(cssValue)</code> with <code>#ffffff</code> but not working either and found <a href="https://code.google.com/p/google-apps-script-issues/issues/detail?id=3752" rel="nofollow">this</a>.</p>
  
  <p>Any solution will be very appreciated.</p>