Tonguez
A suffusion of yellow
I really like the conception of Arcadia as a realm of vast Arcades, it even fits with the current realms of Heliopolis - Pharoanic temples and palaces surrounded by verdant gardens in the desert - and Azuth as the Virtual Academy of a Wizard-god.For me, Arcadia in the sense of architectural "arcades" is an alternate universe that is entirely made out of shopping malls. Everything is storefronts and dramatic architecture and fountains. It is a "heaven" for neatly organized capitalist consumerism, with a "perfect" economy. New arcade passage ways open up as if a virtual reality of online internet shopping. It is the economic laws writ large and slightly benign in the sense of all the prices are fair. It deserves its Lawful by Lawful Good alignment.
Elysium being a bioengineered, psi-tech utopia works for me too