Custom CSS Background Image Issue

I’ve recently upgraded my non-WPMU theme “Enfold” and it’s broken many CSS edits.

I’m trying to get the grey bar background image on this version http://bit.ly/12D6erM

To look like the original on this version : http://bit.ly/15G3nlJ

Tried altering every class I can think of via Chrome’s dev tools, to avail.

Thoughts?