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.

The issue names no files or tests. Start by locating the application's theme configuration and the entry point where the current theme is selected; compare that behavior with system theme detection. Done means the installed application follows the device's system theme consistently.

Written by the indexing model from the issue text.