Unpublished (or Draft) icon in Tree definition

Mar 20 at 4:17 PM
Is it possible to set custom icons for unpublished items in my tree definitions?

Here http://docs.c1.orckestra.com/Console/Tree-Schema-Definition-Reference/Element#_Element it says that the icons are listed in ~\Composite\images\icons\StandardIcons.xml, but in the last few versions this is changed.