Problem

The colorScheme parameter was added to the GoogleMap widget in google_maps_flutter 2.16.0 (PR flutter/packages#11280), but it only works on web. The Android and iOS platform plugins silently ignore it.

This is a follow-up to #176445 and #184064 (the latter was closed after I drafted an implementation; this issue tracks the actual PR).

Native SDK support

Both mobile SDKs already support this:

• Android: GoogleMap.setMapColorScheme(MapColorScheme.DARK) — available in play-services-maps:20.0.0+
• iOS: GMSMapView.overrideUserInterfaceStyle = .dark — the documented color-scheme API per the Google Maps SDK for iOS

Expected behavior

Setting colorScheme: MapColorScheme.dark on a GoogleMap widget with a cloud-based mapId should apply the dark color scheme on Android and iOS, matching the web behavior.

Current behavior

The colorScheme parameter is accepted by the widget but has no effect on Android or iOS. The map always renders in the default (light) scheme.

Proposed implementation

PR open at flutter/packages#11736.