The dark and light metallic band versions of the Moto 360 are now available on Motorola's website. The devices can be had for $299.99. This also includes the smaller 18mm band versions of the watch as well. As you can see in the image above, there are six different versions now. Two different 23mm metallic band models, two different 22mm leather band models, and two different 18mm metallic band models (with lighter metal colors - including gold).
Here's the link to Motorola's website to grab yours: Moto 360 by Motorola