VooDoo,
He is a beautiful frog. He's yours............. now !
However, I would have to say that his coloration leads me to believe his is WC.
Range: Central America: Belize, Colombia, Costa Rica, Guatemala, Honduras, Mexico, Nicaragua, and Panama
I have information regarding the variation in flank color and location -somewhere.
I will post it ( here ) when I find it. If I find it ?

I think ( not sure / with out checking ) the darker blue appears on the flank---- further north in their natural range.

Lynn