Improve theme

app/lib/theme.dart

@@ -125,9 +125,10 @@ ColorScheme _getColorScheme(
       seedColor = defaultSeedColor;
     }
   }
-  return ColorScheme.fromSeed(
-    seedColor: seedColor,
+  return SeedColorScheme.fromSeeds(
     brightness: brightness,
+    primaryKey: seedColor,
+    tones: FlexTones.oneHue(brightness),
   );
 }
 

app/pubspec.lock

@@ -454,6 +454,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.1.0"
+  flex_seed_scheme:
+    dependency: "direct main"
+    description:
+      name: flex_seed_scheme
+      sha256: e4168a6fc88a3e5bc3d6b7a748c6a6083eedc193d343ddc26bbad7fb1b258555
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.0"
   flutter:
     dependency: "direct main"
     description: flutter

app/pubspec.yaml

@@ -59,6 +59,7 @@ dependencies:
     git:
       url: https://gitlab.com/nc-photos/exifdart.git
       ref: 1.3.0
+  flex_seed_scheme: ^1.3.0
   fluttertoast: ^8.2.1
   flutter_background_service:
     git: