Ok, this is really more an annoyance than an issue.
For some reason Word has decided that, in one file only, the Table of Contents and Header page numbers need a grey background color. This only happens in Print Layout View (my preferred view), not in Web or Normal View. The background does not print or show up in print preview.
It's not a big thing, but it's driving me nuts.
Any idea how to get a clear, white background back?
I've tried using Format -> Background -> No Fill (which bumps me out of Print Layout and into Web Layout but doesn't fix the problem). I've tried changing the background under Styles & Formatting too, no dice.