Kloofvreter
Honorary Master
Or simply advertised it like normal and then tossed all the obviously non-white CVs and if any happened to make the shortlist just say, "sorry, you didn't make it". I'm it happens a lot more like we see in public, a bit like happens with rentals. As soon as they find out you're the wrong colour, they just say sorry, place taken.
Yeah, also no need to advertise that you are only looking for AA/BBBBBEBBEBEEEEBEEBEBE positions, just check the CVs and toss those you don't want.