Hello,
Thanks for the topic.
I’ve checked your Footer static block. In Widgetised Sidebars http://prntscr.com/j8vwdv should be selected appropriate widget areas. Likely, content of these areas http://prntscr.com/j8vww1 should be shown in the footer, so please go to Appearance > Widgets and set content for Footer Block areas, then go to Static blocks > Footer > Edit “widgetised sidebar” elements and set Sidebar blocks http://prntscr.com/j8vxop
Copyright Background Color you can change in Theme Options > Footer.
To fix this http://prntscr.com/j8w2eu go to Theme Options > Header Settings > Fixed header color scheme > Dark.
Regards