Preaching to the choir when it comes to black (my knit doesn't get won because it's too damn thin). At some point folks were arguing that black was never an optimum choice in any given outfit. Went through some of mine and felt that any other color would have been an inferior choice here (especially when looking at the full picture). Grenadine though, not knit.
Warning: Spoiler! (Click to show)
I think the darkish green works best actually (even if the shoes that day were black, although that's the case where either black or green tie would be equal). The burgundy tie would also be a choice with black shoes, though not with brown or burgundy shoes. YMMV, naturally.