title: How to change selected column border color & width in Google Charts?
body: <p><a href="https://i.stack.imgur.com/JkF7f.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/JkF7f.jpg" alt="enter image description here"></a></p>
  
  <p>I am using Google Charts. I want to change border color &amp; width of selected column. By default stroke color is white and width is 1. I want to change border color to black and width to 2.</p>
  
  <p>Code :</p>
  
  <pre><code>var data = google.visualization.arrayToDataTable(mydata);
  var options = {
                      width: 600,
                      height: 400,
                      legend: {position: 'top', maxLines: 4},
                      bar: {groupWidth: '50%'},
                      isStacked: true
                      };
  var chart = new google.visualization.ColumnChart(document.getElementById('mydiv'));
  chart.draw(data, options);
  </code></pre>