I like the first shoe a lot! I'm not a fan of the straps on the second shoe (or the zipper.)
I don't have a problem with mixing metals in general (I think when done right it can look very modern.) I think you'll be fine with a gold touch on the shoes and a silver chain on the dress. But that's just me.
so glad the majority was for the first pair, as i liked them much better as well! i wore the outfit last night and loved it! the shoes are comfortable, too!