I've trying to isolate a few things now:
I can't find a way to colorize this white strip.
The font color for the "chat, quote, and reply" so it's easier to see.
And then the widgets (header/side bar) and button bar (I don't know what it's called).
I've tried looking up the classes but they haven't provided a result that fixes it.
Again, all help is greatly appreciated.
During the upgrade the following url is fetched: https://fonts.googleapis.com/css?family=Roboto:300,400,500,700
I was getting a 501 http error..
It was caused by the proxy, and solved by bypassing it.
The upgrade completed successfully.