Sorry - I don't know of any. Like your Mrs., I HATED the wheel covers too, and ultimately decided to buy aftermarket wheels from TSportline. All of the options for different wheel covers I saw were all equally hideous. Also didn't care for the 'naked' Tempests either - I thought they clashed with all of the blackout trim.
Best of luck to you on the search - there's not a lot of great options in my opinion.