I had a white mantle cultist masquerading as a priest of dwayna for roleplay several years back. So I sat down in the Shrine of the Six and tuned him in until he looked just like the NPCs. If you want a perfect match then hide the gloves!
I was the only priest of dwayna RPer at the time, so people kept asking me to officiate weddings >.> Ah yes... Have a white mantle cultist officiate your marriage. Sure.