title: Setting the background color of the plot area of Telerik RadChart
body: <p>I have the need to programmatically change the background color of the plot area of a line chart in the Telerik RadChart control in a Silverlight 4 application.  I also need to be able to change the size and visibility of the PointMarker on a line chart.  I cannot figure out how to do either.</p>
  
  <p>The closest I have gotten is changing the background color of the ChartArea, but that changed the background color of everything except the PlotArea.</p>
  
  <p>All of the sample code I have found on the Telerik site that mentions PointMarker is for te ASP.NET RadChart.  The programming model for that control seems very different.</p>
  
  <p>Thanks,
  Jim</p>