I'm would think most people would be happy with just an inbuilt black theme (for battery and/or eye strain)
installed android webview from Yalp and works again. thanks for your help! Now I can setup and start using this tiny phone!
Jelly Pro with 20180118 build, TWRP & Root as instructions earlier in thread. Took a few attempts, had to reflash stock recovery, format & flash ota update a few times as it kept booting into TWRP after side loading SuperSU.
I got Xposed working ...
Thanks, that was it! So simple but never would have checked... All working good so far