New super cool feature!
All members with 500 posts or greater can now customize the look of their profile page.
By clicking on the customize my profile tab located in the upper right hand corner of your profile page you can now upload a background image or change the colors etc.
This lil tutorial here, may be of some help.
most of the mods have played with this already so you can check out one of our pages to see an example.
If you need any help just let me (or any of us) know and we'll walk you through it.