title: Bold X-Axis Label on Point Hover in Highcharts Column Chart
body: <p>I'm using a Highcharts column chart (<a href="http://www.highcharts.com/demo/column-basic" rel="nofollow">http://www.highcharts.com/demo/column-basic</a>) with over 50 rows of data and 3 different series. Because of this amount and the chart width constraints, the x-axis labels are close together and bunched.</p>
  
  <p>I'd like to bold or change the color of the x-axis label when the user hovers over the point/column within the chart. I know there are events you can bind to each point (<a href="http://api.highcharts.com/highcharts#plotOptions.column.point.events" rel="nofollow">http://api.highcharts.com/highcharts#plotOptions.column.point.events</a>) but I haven't been able to link any style changes to the x-axis labels from this. Here is a jsFiddle (<a href="http://bit.ly/SpPvCW" rel="nofollow">http://bit.ly/SpPvCW</a>) that includes the event on the point. The code block looks like this:</p>
  
  <pre><code>plotOptions: {
          series: {
              point: {
                  events: {
                      mouseOver: function() {
                          $reporting.html('x: '+ this.x +', y: '+ this.y);
                      }
                  }
              },
              events: {
                  mouseOut: function() {                        
                      $reporting.empty();
                  }
              }
          }
  }
  </code></pre>
  
  <p>This jsFiddle (<a href="http://jsfiddle.net/4h7DW/1/" rel="nofollow">http://jsfiddle.net/4h7DW/1/</a>) includes a column chart where the x-axis labels are rotated. </p>
  
  <pre><code>xAxis: {
              labels: {
                  rotation: -70,
                  align: 'right',
                  style: {
                      fontSize: '10px',
                      color:'#999',
                      fontFamily: 'Verdana, sans-serif'
                  }
              }
  },
  </code></pre>
  
  <p>Again, the goal is to bold or change the color of the x-axis label when you hover the associated column/point.</p>