Background Properties Help

This property page is where you set the WowChart background color.

When you select two colors, a gradient between the two colors is automatically generated.  If you set both color selectors to the same color, you will have a single color background.
You can use your own custom colors by left clicking the "More Colors..." on the color selector.

Press the "Ok" button to save your changes. 
Otherwise select a different part of the tree to edit other properties.