You can create your own styling by redefining rich-* classes. Please take a look here: http://www.jboss.org/file-access/default/members/jbossrichfaces/freezone/docs/devguide/en/html/treeNode.html#d0e62481
Yes I read this already, but if I understand everything right, this will not help me. Maybe I doesn't point out the problem exactly. Thats why again.
My problem is that the first node in the tree has a connecting Line which comes from above. But above there is no other node, so this line comes out of the nirvana. In other words the tree starts with a line rather then a folder icon (or any other icon we can define) as it should, in my opion. This are only 4 or 5 pixels but these pixels are disturbing me, because it looks like that there is a node missing. If I were able to disable these little line it would please me. But yet I can't see any solution for this, but maybe anyone else????
Thx for suggestions