What kind of Chinese Yard Long Beans look like black eyed peas?

My friend gave me some of the aforementioned beans this weekend. I just planted some, I hope they turn out great! Only thing is that I have been through many websites trying to identify their exact type and cannot seem to find it.

My CYLB's look almost exactly black eyed peas. They are not dark red, black or anything like that. They are light brown with a "black eye" just like black eyed peas. Anyone have a guess?