Here's the Rumion part you can get your color. I think it is also plastic though.
http://www.jzsinternational.com/servlet/the-826/JDM-2008-TOYOTA-RUMION/Detail
After looking at their price, I went with the ebay ones which seem fine.
http://www.jzsinternational.com/servlet/the-826/JDM-2008-TOYOTA-RUMION/Detail
After looking at their price, I went with the ebay ones which seem fine.