I have both the Dundee and Park Ave. in black shell and neither of them have the rust tint in bright light. If it is something that bothers you and you would like solid black then I would think Saphir Cordovan Black cream would work. I have only used the Saphir Cordovan Cordovan cream on an older pair of burgundy Leeds that had turned fairly brown and it worked well. Although many desire the brown patina that burgundy and #8 shell are known for I figured that I own enough brown shell variants that I wanted to keep them burgundy. I really think that the Saphir cordovan black cream would do the same for you. Although I also think there is nothing wrong with how yours look as the are, to me they look great!
Pish Posh. These are a complete travesty. I showed a few patients of mine pictures of them and moments later they suffered from hysterical blindness. With all of the procedures that must be done, I will make enough $ to purchase a pair, which I guess I will...to possibly illicit such reactions in the future (shhh, don't tell my patients this condition will resolve on its own).
LOL thanks for that Doc!