CSS ya'll, I just worked on a forum where a previous coder had simply copied and modified the WP css or created their own that matched. I have since removed the wordpress and installed and modified some modifications to serve the same purpose as WP although it's all internal to vBulletin now.
Basically this can be done, if your unfamilair how and want it done by a professional I suggest posting first in the Unpaid Modification Request forum and give it time, if no reponse and you still want it then post in the Paid Request Modification Section.... other than that Google will be your friend to brush up on some CSS

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Mike