title: Custom Marker for JQPLOT
body: <p>Is there a way to add multiple different effects to a marker?</p>
  
  <p>I know that there's line, color and shadow properties, all could help me try to create the following design, however I've been failing for the past 2 hours and have come up with absolutely nothing!</p>
  
  <p><img src="https://i.stack.imgur.com/MEGYe.png" alt="enter image description here"></p>
  
  <pre><code>seriesDefaults: {
      lineWidth: 50,
      color: 'yellow',
      markerRenderer: $.jqplot.MarkerRenderer,
      markerOptions: {
          show: true,
          style: 'circle',
          color: 'white',
          lineWidth: 4,
          size: 25,
          shadow: true,
          shadowAngle: 0,
          shadowOffset: 0,
          shadowDepth: 1,
          shadowAlpha: 0.07
      }
  }
  </code></pre>
  
  <p>I feel like a need the following attributes: <code>markerBackgroundColor, markerShadowSize</code> to achieve my result.</p>
  
  <p>Is there something I can do with css3? like create my own html for the marker and style that?</p>