Use APKPure App
Get Light Grey Theme for LG V20 G5 old version APK for Android
Apportez un peu de couleur grise à votre LG V20 / G5 Nougat
This theme have some bugs can't be fix because the limitation from LG Theme Engine. Hope in future they loosen it and i can improve this theme.
Feedback to me if you have problem or bugs in my group with screenshots: https://plus.google.com/communities/103545131057372409612
or email me: ngocgiap23@gmail.com