Ooo, I first thought of a Mesoamerican theme on these new pups! I've been studying alot of my heritage, so I guess it is bias that Aztec and Mayan was the first to pop in my head. Not so much the blue, but the reds that made me think of it. Course, it influenced how I named the pups {very simply mind you} as Uno, Dos, Tres, Cuatro, and Cinco. Heh, I sure will be embarressed if they turn out to be a different theme, though since we don't know who did these {perhaps Tess?} then it would be hard to tell what influenced the artist.
Honestly, we won't know till someone tells us.

Hah, I'm just rambling, I'm very excited about these new pups!