The New Orleans Saints have (to my knowledge) only worn a White/White uniform once - a pre-season game in the 70s.
They have DEFINITELY never sported White helmets...
Not saying they would do it. Not saying they should do it. But I, for one, think it would look SUPER SHARP!
Regarding credits: I did not take this picture myself, only manipulate the colors. The player in the image is Reggie Bush. The pre-photoshop image itself can be found on numerous websites - I have yet to see the photographer credited, but I will continue to try to find out this information.