Is wine made or handled by a Ben Noach, a righteous non-Jew, kosher? There should be no problem with the wine being used for avodah zarah, since the Ben Noach believe in Hashem, and his complete unity (unlike Christians).
This is debated by the Gemara (Avodah Zarah 64b). The Rambam rules that it is forbidden to drink the wine of a ger toshav, but it is permitted to derive benefit from it. This is the ruling of the Shulchan Aruch as well, regarding all non-idolatrous gentiles (Yoreh De'ah 124:6).