Hi Dan Swayze,
Could you attach a screenshot of what you want to achieve, or post a link for it?
As I stated in my previous reply, that's the way styling should be achieved. It was a generic example, not a production ready example.
It will be helpful to see what you mean by "header" (as in the root item to be header) and width beyond of the text.
If you indeed want a header, why not use external element that toggles the tree view?
the Telerik team