Hi All.. I'm sure some already are aware but anyhow I just recently found out I can add my Google Play Store icons on OneUI stock launcher.. You will need to use GoodLock and find the Theme Park section.. You can then create theme using your icons... Hit icon on top select from one's you've downloaded or get new ones... This works on ZF3 current version and Beta 4.0 for other phones..
https://photos.app.goo.gl/87fMJWGLAVVDfe8i8
https://photos.app.goo.gl/87fMJWGLAVVDfe8i8