title: Change the color of legend symbol highchart
body: <p>Is it possible to change the legend symbol color in Highcharts? 
  For example <a href="http://jsfiddle.net/gh/get/jquery/1.7.2/highslide-software/highcharts.com/tree/master/samples/highcharts/legend/symbolpadding/" rel="nofollow noreferrer">demo example</a> contains two series and the symbols in legend are in blue and black (same as the series). </p>
  
  <p>I couldn't find any <code>symbolColor</code> param in the documentation. How do I change them both to say black?</p>
  
  <pre><code>legend: {
      layout: 'vertical',
      floating: true,
      align: 'left',
      verticalAlign: 'top',
      x: 90,
      y: 45,
      symbolPadding: 20,
      symbolWidth: 50,
      symbolColor: '#000000' ?????
  },
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/evzP8.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/evzP8.png" alt="enter image description here"></a></p>