title: What is the C3.JS color.pattern property for?
body: <p>I'm hoping the color.pattern array allows the code to specify the color of each dot on the chart, but given this example I'm not sure it even does anything:</p>
  
  <p><a href="http://c3js.org/samples/options_color.html" rel="nofollow noreferrer">http://c3js.org/samples/options_color.html</a></p>
  
  <p>What does it do?</p>