How  to chnage the af:tree and  af:treeTable collaspe (+) icon ?

i need to change the appearance of af:treetable collapse point (+).
Is this possible ?

Thanks Ric !!!
Track Related Links ::
Re: How to include external style sheet
Re: How can I customize <af:query> and <af:queryCriteria
Re: How to reference Scripts and Stylesheet  in Page Template
include style sheet ::
http://www.w3.org/TR/REC-CSS1#containment-in-html
Modify Skin :::
http://java.sys-con.com/read/273945.htm
ADF Faces 11g Skins
Ric's comments in other post
Here is an article to get you started:
http://jdj.sys-con.com/read/273945.htm
This link oulines all of the skinning key:
http://www.oracle.com/technology/products/adf/adffaces/11/doc/skin-selectors.html
And here is a thread that outlines how to get started:
Could not get resource key af_componentX.XXX from skin

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