Change Meta & Recent Post widget background color

Okay, I was playing with the colors on my website https://www.thejoyofsavingmoney.com in CSS editor & somehow the background of both my Meta & Recent Post widgets in my footer are now black. It may also have affected my Twitter widget on the left as well or it could be completely unrelated. I am using the Mystique theme with WordPress 3.3.1

Please let me know if you need more information or if you have any advice.
Thanks!
Joy