Oreo: If you want to get transparent Back & Recent buttons, install this patch and restart your phone: https://www.dropbox.com/s/b30doa9k994qqik/P_theme_transparent_navbar_style.apk?dl=0
Pixel Launcher 2: https://github.com/amirzaidi/launcher3/releases

XDA forum: https://goo.gl/V3sy6F
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