This theme is for the LG G7 and higher only. Others Oreo phone please don't install it.
From version 3.0, notification be themed to black. If you want restore to default white background notification, go to my website to get more information.
Feedback to me if you have problem or bugs in my group with screenshots:
Google plus: https://plus.google.com/communities/111709234518916948036
Email : firstname.lastname@example.org