A solution was added by vBulletin that enabled the adminstrators to set a default global style for the profile pages, but this does not work very well if you use multiple skins and especially if the skins are dark and light skins.
The attachment on this post shows how you can set the default profile style, but this will be the default style for every skin on your board.
** To find the page in the screenshot goto your own profile page for your administrator account and then click "Customize My Profile" link in the top right hand corner of the profile page.
Here is the video tutorial on vBulletin.com explaining how to use this:
For customers who have multiple skins and need to use the CSS method download the *.txt file attached to this thread.
This TXT contains the custom CSS to make the profile pages matche the rest of the skin but please note this will disable custom profiles. So members will not be able to make changes to their profile pages.