OK. Profile Page customization is switched on. I would suggest this is approached with care by everyone as you can make your profile page almost unreadable if you change too many colours or use background images etc. However, careful use can enhance your profile page and give it much more "sparkle" than the standard vBulletin settings.
Bear in mind that this is a fairly major setting and Bonnie Scotland may not want it switched on when he gets back. But for now.... it's switched on.
If you do completely mess up your profile page you can "reset" it back to standard by clicking the "clear all" button at the bottom of the Profile Customization" page.
A.