This theme matches exactly the one that Google made for Android M second preview and N extended on more apps it's "the old" O/Pixel Dark Mode.
Now with optional Google Pixel colors and Android O style!

The theme installs through an app that this app will link you to IT REQUIRES ROOT (except on OMS rootless Oreo and on Samsung Touchwiz Nougat/Oreo system).

The theme supports the following systems:
-AOSP/Custom/Google ROMs from Marshmallow up to Oreo 8.1 DP;
-OxygenOS Nougat and Oreo;
-Samsung Nougat and Oreo stock system (including S series Note series A series and J series) but without dark notifications.

Other manufacturers' ROMs aren't guaranteed to be compatible (the more different they are from AOSP or Google ROMs UI the more they're likely to not be compatible.
In case you end in bootloop flash the rescue zip that you find in /sdcard/Substratum/ (the substratumLegacy one if your ROM is RRO. Only most custom ROMs have OMS the rest has RRO) and ask for refund also by e-mail if you need.


Themed elements list (70+ apps): http://txt.do/dlvhx


Thank you all for supporting me. :)