I just posted gtkbreeze a kconf_update tool to set gtk settings on first login

https://git.reviewboard.kde.org/r/120624/

this checks if gtk settings are already set, if they are not or are set to oxygen they update them, else it quits
it does this for both gtk 2 and 3
it sets gtk to the orion theme because it's available for both gtk 2 and 3 and it looks similar to breeze
it sets the icons to oxygen because I could not get breeze icons to work with gtk 2 or 3
I also could not get icons to show on buttons or in menus in gtk 3

feedback welcome

I went ahead and responded in the review request kde-jriddell. Sorry we kinda speak pixels a little better than we speak code.

Thanks much for offering us an opportunity to provide feedback.