Comment 115 for bug 195929

moz_gtk_init isn't called again on theme change.

Engine writers can special-case gecko, sure, but they can also with the
"MozillaGtkWidget" name, so I don't really see why they would choose the bad
way over the good. And I hope that when some program decides to paint a widget
itself (for example NetworkManager may want to do that to get a good look on
hover), it can use the same hint; so this hint won't stay a good indicator that
it's gecko.

It's strange that you can't even grant a review you've been asked for...