Blasphemy! Sorry Tom, I must disagree. I love the yellow heads, but I've got to say vestigium and, especially dickersonae are cooler looking overall. I like the body shape of the insularis group better... longer snouts and latterally flattened tails. I'm kind of partial to blue, as well, and you can't beat a nice dickersonae in that respect. At least the darker ones, that are more of a deep cobalt blue.

Those are some nice looking yellow heads, though Eve.