Thank you Dimitar, I added the classes to my custom theme. Next, I added the class name to the jqxTree div. The white background still appears.
here is the example:
http://www.austinwebmaster.com/BeeCreekUMC/tree_menu.php
Next, I tried adding style=’background-color:transparent;’ to the UL. Still the white background appears.
The issue appears to be with the UL or LI but I cannot be sure.
Any idea?