Some people reported similar issues on their Umi Z Pro after the OTA. As ben said flash the software with SPFT. I can´t reproduce this issues on my phone.
same for me... not easy to get this pulled down..
maybe they wanted have fixed the ghost pull down issue in the previous versions!
@ UMI: please investigate!
Post time 2017-7-20 15:39
No that easily, I believe that color is hardcoded in the Android system so unless you hack and recompile some system files or have proper Xposed module it´s a bad luck.