How to override the white circle in the splash screen for Android?

Tried to use this module to set up splash screen for iOS and for Android.
When iOS is perfect, the Android version has a white circle that I cannot seem to be able to change or set its background to another color.

Isn't this plugin allowed to do that? Am I missing something or is it a limitation?

Thank you!

The issue does not name a file, test, or entry point. Start by tracing the Android icon or splash-generation behavior and determine whether the white circle is produced by this package; done means the circle can be configured or the limitation is documented with the relevant Android constraints.

Written by the indexing model from the issue text.