Hello ZenUI Team.
I would like to suggest and ask for adding a new function in Quick Settings Panel. Night Mode shortcut button, that will set screen brightnes to lowest possible, so user could use phone comfortably in complete dark place. Such button will allow to quick switch between normal screen brightness operation and night mode. The night level of screen should be really dim and discreet, just to allow to see anything on very dimmed screen ( so it will not enlight the room or person using the phone) It is also usefull during car driving at night.
Best regards!