[Substratum] Greyce (Nougat/Oreo/Pie)

3/4/2017

This is a major update, so if you face any issues, please uninstall and reinstall the theme 🙂

* Re-based the theme for OMS7 (Plugin 7.0.2)
* Themed AOSP Messaging
* Fixed the brightness slider not being themed
(Now the sliders look even better! ✨)
* Fixed the lockscreen camera icon
* Added Navbar for Subs-Legacy as vector drawables are not supported
(Select legacy from navbar spinner)