Hmmm...since no one is willing to take a crack at my other thread maybe this one will inspire?

My neighbors has an iris that is escaping under the chainlink fence to my side. It hung out with my white peonies and was so beautiful I wanted to find some for my plant list for my new bed.

It is a beautiful black-purple; can anyone share the names and/or sources of dark (black) purple irises like that one? A pic of neighbor's iris can be seen in my thread asking for an ID.

Thank you!