For those of you who are unsure as to how to change your forum skins here are detailed instructions.
How to personalize your forum skin:
Scroll to the bottom of the page. At the very bottom left is a drop-down menu, as shown circled in red in the image below.
Click on the drop-down arrow, and it will show you several choices for forum skins. This is called your 'Quick Style Chooser'.
To make the skin you view the forum in permanent every time you visit the forum, go to your User CP, and in the Settings & Options on the left, click on 'Edit Options'. In the very bottom box you will see the 'Forum Skins' with the drop-down menu to choose your skin. After making your selection, be sure to click on 'Save Changes' at the bottom of the page.
If you have any questions or complications, please don't hesitate to ask.