title: Highstock theming range buttons
body: <p>So, I'm trying to theme the Highstock range buttons. Thing is, I can't find a detailed list of the available attributes i can use and how to use them. Right now I'm trying to get circular (not rounded corners, a full circle) buttons on this fiddle:</p>
  
  <p><a href="http://jsfiddle.net/QeDGC/4/" rel="nofollow">http://jsfiddle.net/QeDGC/4/</a></p>
  
  <pre><code>$(function() {
      $('#container').highcharts('StockChart', {
  
          chart: {
          },
  
          rangeSelector: {
              buttonTheme: { // styles for the buttons
                  //fill: 'none',
                  //stroke: 'none',
                  //'stroke-width': 0,
                  r: 15,
                  height:26,
                  style: {
                      color: '#039',
                      fontWeight: 'bold'
                  },
                  states: {
                      hover: {
                      },
                      select: {
                          fill: '#039',
                          style: {
                              color: 'white'
                          }
                      }
                  }
              },
              inputBoxBorderColor: 'gray',
              inputBoxWidth: 120,
              inputBoxHeight: 18,
              inputStyle: {
                  color: '#039',
                  fontWeight: 'bold'
              },
              labelStyle: {
                  color: 'silver',
                  fontWeight: 'bold'
              },
              selected: 1
          },
  
          series: [{
              name: 'USD to EUR',
              data: usdeur
          }]
      });
  });
  </code></pre>
  
  <p>The issue is, I don't know how to change the form of the button while keeping the text centered. I can change r and height until I get the look I want but the text wont be centered. If anyone can tell me what to change to center the text inside the buttons that would be great, but ideally I would love to have a link with a description of all the available SVG options I can use and what parameters do they take</p>
  
  <p>Ty,</p>
  
  <p>Axel</p>