title: Highcharts - How to set Pie Chart's background color dynamically
body: <p>I'm using the following line to change some visual properties based on some conditions</p>
  <pre><code>this.$refs.pieChart.chart.series[0].update({ dataLabels: { color: 'blue' }, chart: { backgroundColor: 'yellow' } })
  </code></pre>
  <p>This works fine for the dataLabels part, but I'm unable to change the backgroundColor one.</p>
  <p>I tried this:</p>
  <pre><code>this.$refs.pieChart.chart.series[0].update({ dataLabels: { color: 'blue' }, backgroundColor: 'yellow' })
  </code></pre>
  <p>and this</p>
  <pre><code>this.$refs.pieChart.chart.series[0].update({ backgroundColor: 'yellow' })
  </code></pre>
  <p>With no luck, I searched everywhere else in my code, nothing is overriding or setting the <strong>backgroundColor</strong>
  side.</p>