x11 vs broadway - icon theme

[Daniel Kasak <d j kasak dk gmail com>]

Yet another icon issue.

The screenshot is the same as in my previous issue:
http://tesla.duckdns.org/images/x11_vs_broadway.png

When my app is using X11, gtk+ is using my selected icon theme, but when
using broadway, I'm getting the default icon theme. Why? I'm launching both
from a terminal with the same environment variables, other than
GDK_BACKEND. Do I have to set another environment variable under broadway
for the icon theme?

Thanks :)

Dan