The theme installs through Substratum Theme Engine app, that you can download here, IT REQUIRES ROOT, Busybox, and a Layers or Substratum compatible ROM: https://goo.gl/BB5eio
**If you have black text in contacts, flash this zip https://goo.gl/UPGdQ1 ONLY FOR 5.1.x,
this one ONLY for Marshmallow (and MAYBE Nougat) ROMs http://goo.gl/tkRLwl if the zip doesn't work, flash also this one: dropbox.com/s/jns3ow0nugeeud9/ThemeableGoogleContactsDialer.zip?dl=1 .
Here the official wallpaper, used in the previews: http://goo.gl/teUry8

For any problem (check this FAQ first https://goo.gl/czNenU ) or suggestion, send me e-mail at piereligio@gmail.com
or join my comminity and ask there https://plus.google.com/communities/108109701626930507263

The theme has been tested on stock Android Marshmallow, YAOSP ROM (a Layers ROM), PureNexus Substratum ROM, Android Nougat 5th preview (there it causes crash to Documents UI!).

Themed elements:

-Android N-ify XPosed module;
-AOSP Contacts** ;
-AOSP Dialer;
-AOSP Keyboard;
-AOSP Launcher;
-AOSP Messages;
-Calculator;
-Car Throttle dark mode;
-Documents/Download UI;
-Framework-Res;
-ES File Explorer;
-Google Calendar;
-Google Chrome;
-Google Contacts** ;
-Google Dialer;
-Google Drive;
-Google Keep;
-Google Keyboard;
-Google Hangouts;
-Google Inbox;
-Google Launcher/Now;
-Google Mail;
-Google Messenger;
-Google Play Music;
-Google Play Store;
-Google Plus;
-Google Translate;
-Kernel Adiutor's dark mode;
-N style notifications;
-Nova Launcher's searchbar;
-Package Installer;
-Root Explorer dark theme;
-Settings;
-Solid Explorer dark theme;
-Substratum app;
-SuperSU;
-SystemUI;
-Telegram (only partially themed. For full theme use Plus Messenger, a Telegram client, and download this and apply it from personalisation settings: goo.gl/JHmUww );
-Twitter night mode;
-WhatsApp.

Thank you all for supporting me. :)

Layers Dark RRO theme stock Marshmallow Android 6 6.0