Based on the Everforest Dark Hard color scheme: https://github.com/sainnhe/everforest More Everforest themes: https://addons.mozilla.org/en-US/firefox/addon/everforest-dark-harder-theme/ https://addons.mozilla.org/en-US/firefox/addon/everforest-dark-medium-theme/ https://addons.mozilla.org/en-US/firefox/addon/everforest-dark-soft-theme/ https://addons.mozilla.org/en-US/firefox/addon/everforest-light-soft-theme/