bwong337this is actually the reverse side of the horween black shell if i'm not mistaken. the green will fade over time and turn into a nice shiny brown.
bwong337As others have said, it is Reversed Horween Black Shell Cordovan. I forgot about it... if @IanAnderson wants to modify it and add it as an option. I'm fine with that. This is a photo of the strap I actually use now. It's awesome!