title: Automatic colors assignment in chart.js 2.x doesn't work anymore, used to work in v. 1.x
body: <p>Using Chart.js 1.x I could create a pie chart and get the colors automatically assigned:</p>
  
  <pre><code>&lt;script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/1.1.1/Chart.js"&gt;&lt;/script&gt;
  &lt;body&gt;
  &lt;canvas id="myChart" width="400" height="400"&gt;&lt;/canvas&gt;
  &lt;script&gt;
  var ctx = document.getElementById("myChart").getContext("2d");
  var data = [{"label":"Conservative","value":"5"},{"label":"Democratic","value":"6"}];
  var myChart = new Chart(ctx).Pie(data);
  &lt;/script&gt;
  &lt;/body&gt;
  </code></pre>
  
  <p>if I do the same with v 2.x</p>
  
  <pre><code>&lt;script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.3.0/Chart.bundle.js"&gt;&lt;/script&gt;
  &lt;body&gt;
  &lt;canvas id="myChart" width="400" height="400"&gt;&lt;/canvas&gt;
  &lt;script&gt;
  var ctx = document.getElementById("myChart").getContext("2d");{"label":"Democratic","value":"6"}];
  var myChart = new Chart(ctx, {
      type: 'pie',
      data: {
          labels: ["Conservative", "Democratic"],
          datasets: [{
              data: [5, 15],
          }]
      }
  });
  &lt;/script&gt;
  &lt;/body&gt;
  </code></pre>
  
  <p>the whole Pie is displayed in Grey unless I specify the colors manually; am I missing something? The only related question I've found is this one: <a href="https://stackoverflow.com/questions/31243892/random-fill-colors-in-chart-js">Random fill colors in Chart.js</a> however, as explained above, it perfectly worked on 1.x so it seems strange to me it doesn't work anymore.</p>