Simply put, "Ball of Fire" is one of our favorite movies of all time...!
While putting together this group of publicity pictures, I noticed that Stanwyck's makeup in some of the photographs is very light, giving her a much softer look than she has in the film. Probably too soft for a character named "Sugarpuss" O'Shea. Hurrell was known for asking his actresses to wear little or no makeup during his shoots - he supplied the Hollywood perfection in the retouching process - so perhaps that's the reason for her lack of glamorous varnish.
* I'm not entirely certain that all of these are by Hurrell; aside from makeup inconsistencies, there are stylistic ones as well.