Sidebar Background
Change the section background color.
and select Advanced ⟶ Backgrounds
to access the website background styling settings.
Pick "Left Sidebar" or "Right Sidebar" to customize
the siebar sections of your website.
To reset the styling and revert to the default settings,
click the clear advanced changes link at the bottom of the page.
Each section of your website can be styled independently.
This rule also applies to the background property.
go to Advanced ⟶ Gadgets for a general gadget stying
or straight to the specific section:
Left Sidebar / Right Sidebar / Footer