When using the Google Maps style wizard (
http://gmaps-samples-
v3.googlecode.com/svn/trunk/styledmaps/wizard/index.html) I have
noticed that the country of France does not honor this code:
{ featureType: "administrative.province", stylers: [ { visibility:
"off" } ] }
The province outlines remain, while the rest of the world map honors
it.
A workaround I have found is to do this:
{ featureType: "administrative", elementType: "geometry", stylers:
[ { visibility: "off" } ] }
This code turns off all the geometry, which forces provinces to turn
off as well.