title: Error when adding and styling Angular-Google-Chart
body: <p>I have a angular google (bar)chart:</p>
  <pre><code>&lt;google-chart
    [data]=&quot;data&quot; 
    [columns]=&quot;dataColumns&quot;
    [type]=&quot;chartType&quot;
    [options]=&quot;options&quot; &gt;
  &lt;/google-chart&gt;
  </code></pre>
  <pre><code>chartType = &quot;BarChart&quot;;
  
    options = {
      backgroundColor: 'transparent',
      colors: ['#ffa500']
    }
  
    dataColumns= [
      ['Name', {role: 'data'}],
      ['Data', {role: 'data'}],
      ['Color', { role: 'style'}],
      [{ role: 'annotation'}]
    ]
  
    data= [
      ['name1', 10, 'red', 'text'],
      ['name2', 8, 'green', 'text'],
      ['name3', 5, 'blue', 'text'],
    ];
  </code></pre>
  <p>Now I get this message: &quot;All series on a given axis must be of the same data type&quot;. What does this mean and how to fix it?</p>
  <p>And I have one additional question: There are these vertical lines inside the chart, how do I disable them?</p>