Steve,
The reservation page shows that SF GP7s will be offered in Zebra stripe as well as Blue & Yellow. I have four reserved and have requested units with dynamic brakes. Usually, the number of reservations determines which scheme or schemes get produced. The Zebra stripe is also in the reservation list (where you indicate how many units you want).
If you want the GP9 in Zebra stripe, find a photo on-line and send Scott an email with a link to the picture. He will probably then add it to the list. That is what I did for the GP7 and the photo that appears on the reservation page is the one for which I sent the link.