App Dark Mode and 15 second delay for alarm.

First, when will the app have a dark mode? This should be a standard feature on most apps and especially on one such as this that will be checked at night time. Second, can we get an additional shorter exit/entry delay option for the alarm, say 15 seconds or so? I feel 30 seconds is still too long of a time for someone to enter, grab things and exit before the alarm goes off. I know it can be set to instantly go off, but there should be a shorter delay option for those that still want to be able to open the door and disarm the alarm via the keypad.