Footer Background Color won't revert to Transparent

Hi I'd like to make the footer sidebar areas' background transparent on http://gogetterseo.com/cw/ I decided the grey background was boring so I coded an image of hardwood into the background. The problem is that the grey areas are blocking the wood from being seen correctly. How can I remove the grey colors from my footer section? There should be something to enter into the Custom CSS section for that, right? I don't want any background color anywhere around the footer area, just the woodgrain. Thanks a lot