In what file(s) are Firefox "Preferences" changes stored?

I'm trying to back up only the changes I make in Preferences. 20 (at the most) binary switches, on/off in:
Quote:

General Home Search Privacy & Security Sync

(categories in the left pane)

The folder that contains the configuration data is 17M!

The biggest offenders appear to be .sqlite:
Quote:

-rw-r--r-- 1 root root 5242880 Apr 24 13:28 favicons.sqlite -rw-r--r-- 1 root root 5242880 Apr 24 13:28 places.sqlite -rw-r--r-- 1 root root 524288 Apr 24 13:28 cookies.sqlite -rw-r--r-- 1 root root 229376 Apr 24 13:18 content-prefs.sqlite -rw-r--r-- 1 root root 196608 Apr 24 13:27 formhistory.sqlite -rw-r--r-- 1 root root 98304 Apr 24 13:27 permissions.sqlite -rw-r--r-- 1 root root 98304 Apr 24 13:28 webappsstore.sqlite -rw-r--r-- 1 root root 65536 Apr 24 13:27 protections.sqlite -rw-r--r-- 1 root root 4096 Apr 24 13:19 storage.sqlite

pref.js? Are there others?