Map Theme Gallery
The DMOPress WordPress Plugin ships with the following built-in map themes:

Classic
Eerily similar to the default styling used by Google Maps.

Grayscale
Blends in nicely with just about anything.

Gotham
Inspired by the night. And Batman.

Midnight
A neutral dark theme.

Nature
Highlights green spaces and bodies of water.

Pear
An Apple Maps inspired look.

Safari
Another great nature-inspired design.