I don't see it on Omega's website in the U.S. But that doesn't mean they don't have it. To know for certain you will need to contact an Omega Boutique or Omega Authorized Dealer to see if they can order one for you.
Personally, I think the Omega NATO straps are way overpriced for what you get. I've been happy with Monstraps as an alternative. Here's the colorway you're looking for: