Changing Sidebar background colour to match rest of site

I am having difficulties getting the background of the right sidebar to match the rest of the site.

http://resolvingunfairbusiness.com

I have been able to change the background for the footer and posts/pages. I’ve got the background for the widgets to the colour matching the post/pages but I’m unable to figure out how to get the background of the sidebar to match the rest. I hope I’m referring accurately to the different elements.

Have spent a fair amount of time trying to locate a solution in the forums. Without success.

Any assistance would be greatly appreciated. Thank you.