TOD'S Gommino
These are probably something of an acquired taste, but I think they are among the most beautiful shoes ever crafted.
Why green? Why not. They also come in purple (modeled here) which I think look great and a myriad other unusual colours. Given an infinite supply of money, I would of course own them all.
I stopped wearing boring black and brown shoes back in June. It has been an oddly and profoundly life-changing experience.

