title: Change map color on specific provinces
body: <p>I'm using the demo linked <a href="https://jsfiddle.net/gh/get/library/pure/highslide-software/highcharts.com/tree/master/samples/mapdata/countries/it/it-all" rel="nofollow noreferrer">here</a>.</p>
  
  <pre><code>// Prepare demo data
  // Data is joined to map using value of 'hc-key' property by default.
  // See API docs for 'joinBy' for more info on linking data and map.
  var data = [
      ['it-na', 0],
      ['it-tp', 1],
      ['it-pa', 2],
      ['it-me', 3],
      ...
      ['it-pn', 107],
      ['it-vi', 108],
      ['it-tv', 109]
  ];
  
  // Create the chart
  Highcharts.mapChart('container', {
      chart: {
          map: 'countries/it/it-all'
      },
  
  title: {
      text: 'Highmaps basic demo'
  },
  
  subtitle: {
      text: 'Source map: &lt;a href="http://code.highcharts.com/mapdata/countries/it/it-all.js"&gt;Italy&lt;/a&gt;'
  },
  
  mapNavigation: {
      enabled: true,
      buttonOptions: {
          verticalAlign: 'bottom'
      }
  },
  
  colorAxis: {
      min: 0
  },
  
  series: [{
      data: data,
      name: 'Random data',
      states: {
          hover: {
              color: '#BADA55'
          }
      },
      dataLabels: {
          enabled: true,
          format: '{point.name}'
      }
  }]
  });
  </code></pre>
  
  <p>This is the demo code but I would like to change the color used only for specific provinces. Actually all the provinces are blue but I want to change color according to the regions.</p>