This option is customizing styles for your Footer.
Selecting yes, will drop down color options for your Footer Widget Title, Footer Text, Footer Link, Footer Link Hover, Footer Background, Tag Widget Background, Tag Widget, Tag Widget Border, Tag Widget Background Hover, Tag Widget Hover, Tag Widget Border Hover, Copyright Background, Copyright Text, Copyright Link and Copyright Link Hover.
Choose Footer Pattern
You can select a Footer Pattern for your footer background.
Footer Background
And you can Upload a Footer Background and adjust settings like, Background Attachment, Background size and Background Repeat.