What is the style of Metropolis in Superman: The Animated Series?

For example, the style of Gotham City in Batman: The Animated Series is retro/Art deco, with everything looking like the 1940's with the buildings, cars and fashions.

To me, Metropolis looks retro-futuristic, with the buildings and cars looking retro-futuristic and the fashions looking like the 1950's or 1960's.

I know I already made a topic about the style of Metropolis in this show and in Justice League and Justice League Unlimited, but I had to make sure if what I said was true.