GeoChart color example

An example of the geochart color options.

by swaroop206

HTML

<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
       <div id="geochart-colors" style="width: 700px; height: 433px;"></div>

JavaScript

google.charts.load('current', {
        'packages':['geochart'],
        // Note: you will need to get a mapsApiKey for your project.
        // See: https://developers.google.com/chart/interactive/docs/basic_load_libs#load-settings
        'mapsApiKey': 'AIzaSyD-9tSrke72PouQMnMX-a7eZSW0jkFMBWY'
      });
      google.charts.setOnLoadCallback(drawRegionsMap);

      function drawRegionsMap() {
        var data = google.visualization.arrayToDataTable([
          ['Country',   'Latitude'],
          ['Algeria', 36], ['Angola', -8], ['Benin', 6], ['Botswana', -24],
          ['Burkina Faso', 12], ['Burundi', -3], ['Cameroon', 3],
          ['Canary Islands', 28], ['Cape Verde', 15],
          ['Central African Republic', 4], ['Ceuta', 35], ['Chad', 12],
          ['Comoros', -12], ['Cote d\'Ivoire', 6],
          ['Democratic Republic of the Congo', -3], ['Djibouti', 12],
          ['Egypt', 26], ['Equatorial Guinea', 3], ['Eritrea', 15],
          ['Ethiopia', 9], ['Gabon', 0], ['Gambia', 13], ['Ghana', 5],
          ['Guinea', 10], ['Guinea-Bissau', 12], ['Kenya', -1],
          ['Lesotho', -29], ['Liberia', 6], ['Libya', 32], ['Madagascar', null],
          ['Madeira', 33], ['Malawi', -14], ['Mali', 12], ['Mauritania', 18],
          ['Mauritius', -20], ['Mayotte', -13], ['Melilla', 35],
          ['Morocco', 32], ['Mozambique', -25], ['Namibia', -22],
          ['Niger', 14], ['Nigeria', 8], ['Republic of the Congo', -1],
          ['Réunion', -21], ['Rwanda', -2], ['Saint Helena', -16],
          ['São Tomé and Principe', 0], ['Senegal', 15],
          ['Seychelles', -5], ['Sierra Leone', 8], ['Somalia', 2],
          ['Sudan', 15], ['South Africa', -30], ['South Sudan', 5],
          ['Swaziland', -26], ['Tanzania', -6], ['Togo', 6], ['Tunisia', 34],
          ['Uganda', 1], ['Western Sahara', 25], ['Zambia', -15],
          ['Zimbabwe', -18]
        ]);

        var options = {
          region: '002', // Africa
          colorAxis: {colors: ['yellow',...