Change Tree node style or type to Label

I want to create a treeview whose node types are of type label like the following linked tree in WPF.

http://www.codeproject.com/Articles/14544/A-TreeView-Control-with-ComboBox-Dropdown-Nodes

How to create such tree so that I can add image on this label the way I want?

Also all the label operations like Text alignment, colors etc etc I can do it in my way?

Thanks for any reply in advance