Jerry at Stillwater does carry the Shadow Tartan in green, black and Safron. However, according to my conversation with him, he's had trouble getting the fabric of late and so sizes are limited to what he has in stock...
Seems Jerry has refreshed his Shadow Tartan stock! I've been waiting for the solid green woolie to become available in my size, and now it is! I just now bought one. Woo hoo!! I'm sure it's already shipped!