Firefox Quantum is
almosthere! This release adds themes matching the new syntax colors!
Run the following command:
apm install firefox-syntax
To activate, go to the Settings > Themes section and select “Firefox” from the Syntax Themes drop-down menu.
Once activated, you can change the Subtheme in the theme settings:
Firefox 48 Dark
Firefox 48 Light
Firefox 56 Dark
Firefox 56 Light
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.