GTK3 theme reload on the fly

[mkj gotu dk (Martin Kjær Jørgensen)]

I'm searching for a way to reload GTK applications themes on the fly when
the .gtkrc-2.0 and settings.ini files was changed. I've managed to get GTK2
applications to do reload by a perl shell script mentioned in this thread:

https://forums.gentoo.org/viewtopic-t-910202-start-0.html

... and the reload program below:

https://github.com/neeasade/pkgbuilds/blob/master/gtkrc-reload/gtkrc-reload.c

Does such script or program exists for GTK3, or am I attacking the problem
from a wrong direction?

/Martin