Linux Mint – Mint-Y-Dark-Aqua per RafaelKr

This theme perfectly suits the Linux Mint theme Mint-Y-Dark-Aqua. With dark home background.

It is more finely tuned to the Mint-Y-Dark-Aqua theme than the default "System theme — auto".

Versioning is based on the version of Linux Mint it's compatible with.

Theme based on colors of Linux Mint – Mint-Y-Dark-Aqua.
https://linuxmint.com/

For Mint-Y-Dark (Mint Green) see https://addons.mozilla.org/firefox/addon/linux-mint-mint-y-dark/