System and Application Theme

Is your feature request related to a problem? Please describe.
System theme and Enatega Application theme is contradicting with each other.

Describe the solution you'd like
When the user install the enatega application and uses it, the application should be able to pick whichever theme system is already using.

Start by locating the application’s existing theme handling and how it reads system theme settings. Verify the behavior on installation and use: the application should follow the device’s selected system theme rather than contradicting it.

Written by the indexing model from the issue text.