Openoffice-bin should use gnome theme if emerged with USE="gnome" (like openoffice-ximian used to provide). Now it uses gtk widgets, but icons are the stock ugly ones. Or maybe there should be a separate ebuild just with the icon theme. Reproducible: Always Steps to Reproduce: 1. emerge openoffice-bin with USE="gnome" 2. run it Actual Results: The icon theme is ugly default. Expected Results: It should look more like gnome apps.
Not possible, as this is not provided in the official binary. If you want to use a substitute for openoffice-ximian, us app-office/openoffice instead, it has all this stuff