Sports Nation is not a responsive theme. Responsinator assumes the site you're checking is responsive, so it just resizes the desktop version of the site, it doesn't actually test for mobile.
The difference you'r seeing is between the desktop and mobile versions of the site. The only widget positions that are visible on the mobile version of the site are the Mobile Top (1 & 2) and Mobile Bottom (1 & 2) positions. If you want the Fader to show on the mobile site, you'll have to place a copy of it in one of the mobile positions.
As for the background color, I'm not sure why it would be doing that, and I don't own any Apple devices to test it on.
I don't remember if Sports Nation was one that had the option, but you may be able to test the mobile version in Firefox and look at the backgroun with Firebug
by adding the ?mobile=1 URL argument.