I had to look through the internet quite a bit to find ANYONE who was selling them.
The only 2 places I could find that were were Australia (but that was domestic shipping only) and Japan (the one I bought).
There's an emerald green on ebay for $1400 in the US if you want to pick that up. (Edited to add location)
The green ones unfortunately don't have the special tuning that the sapphires and pearl whites have