Tree Component AS3 background color ?

[onthefield]

Hi I am desperate to figure out how to change the background color of a Tree component


I can change the font like below:

Code:

var myTextFormat:TextFormat = new TextFormat();
myTextFormat.font = "Comic Sans MS";
mytree.setRendererStyle("textFormat", myTextFormat);

How can I change the background color??

[flexy]

Code:

myTree.setStyle( "backgroundColor", 0xFF66600 );