If you are using the site's old default theme (Digital_Ink), I have created 15 different backgrounds for you to choose from. These backgrounds may work for the other themes too, although the colors were formatted specifically for that particular theme. Try them out and see what works best for you.
Check back into this forum often as more themes and designs will be added from time to time. Here's what's available at the moment:
Take note of the title of the design you chose because you will need to record it in the code below.
To change your background:
1) Click the "HOME" tab in the main menu.
2) Select the "SETTINGS" tab in your profile admin page.
3) Select the "Design My Profile" link.
Once on that page, scroll all the way down to the bottom "CSS (Advanced Users):" text box window.

4) Copy and paste the following code into that window as shown above:
body {background-color:black; background-image:url(design/pic/images/backgrounds/Background10.jpg);backgound-position:Top Center;background-attachment:fixed;background-repeat:repeat-y;}
NOTE: The number (in red font) can be changed to anything from "01" to "35" in order to select from the different backgrounds. Choose the one that best suites you.
If you know the location of a background of your own, simply type in the full URL address in between the () - just be sure to include "http://"when you do.
You can further customize your profile by changing the color values in the boxes above that window as well.
After you've made your changes, click the "Save Profile Settings" button. Return to that area as often as you need to until you have designed your profile to your liking.