How can I debug formatting in LibreOffice?

Question

I am using LibreOffice Writer 4.0.2.2 to edit a Word document sent to me by a Microsoft user. It contains certain formatting that I can't figure out how to change (a gray background on some of the text).

I usually use LaTeX for my text documents, and so I'm used to seeing explicit formatting commands, which make it relatively obvious what to change. But in this case, I don't know where to look; there seem to be a lot of places where background color can be set.

In general, does LibreOffice have a way to "debug" formatting, to determine what is causing a certain effect, and help figure out how to change it?

I know some word processors used to have a "reveal codes" feature that would show all formatting directives in the document. As far as I can tell, LibreOffice doesn't have such a feature, but maybe there is something else that can help me.

(If I don't get an answer to this general question, I'll post a more specific one about the particular bit of formatting I'm trying to excise.)