Android Lock fingerprint authentication - change background to custom image/color

  • Which SDK this is regarding: e.g. auth0-android-lock
  • SDK Version: e.g. 3.2.0
  • Platform Version: e.g. Android api 26+
  • Code Snippets/Error Messages/Supporting Details/Screenshots:

I am initialising SecureCredentialsManager with requireAuthentication request:

manager.requireAuthentication(
                activity,
                RC_AUTH0_UNLOCK_AUTHENTICATION,
                stringsProvider.getString(R.string.biometrics_title),
                stringsProvider.getString(R.string.biometrics_description)
            )

When application starts - user is presented with a bottom sheet where it explains that user should tap screen/fingerprint reader to enter the application - no issues here.

My main problem is that behind the bottom sheet its a black background.
Is it possible to change this black background to some sort of color or image?

Thank you.