appLogoBackgroundColor

Solid-colour background, as a hex string #RRGGBB or #AARRGGBB (Android convention — alpha first). Used in place of a BG PNG when the background is just a flat colour. A semi-transparent colour is flattened over white on both platforms (with a warning) so Android and iOS match.

Mutually exclusive with appLogoPngBackground — set exactly one when appLogoPngForeground is set.