Org headings in state done no longer correctly fontified

Presumably as of merging branch refactor-headings-options, Org headings in state done are no longer correctly fontified when modus-{operandi,vivendi}-theme-headings is set to '((t . section)).

To reproduce, create an org-mode buffer and insert:

* DONE Do the thing

Expected: The whole heading is fontified according to the above setting. Actual: Only DONE is fontified according to the above setting.

On a somewhat related note, as the overline color changed, the overline for org-agenda-date{,-today,-weekend} looks out of place with Org, Markdown, Info, etc.