diff --git a/packages/stac/lib/src/parsers/stac_color_scheme/stac_color_scheme.dart b/packages/stac/lib/src/parsers/stac_color_scheme/stac_color_scheme.dart
index f7c879a7..1a037917 100644
--- a/packages/stac/lib/src/parsers/stac_color_scheme/stac_color_scheme.dart
+++ b/packages/stac/lib/src/parsers/stac_color_scheme/stac_color_scheme.dart
@@ -25,8 +25,8 @@ abstract class StacColorScheme with _$StacColorScheme {
     required String onError,
     String? errorContainer,
     String? onErrorContainer,
-    required String background,
-    required String onBackground,
+    String? background,
+    String? onBackground,
     required String surface,
     required String onSurface,
     String? surfaceVariant,
diff --git a/packages/stac/lib/src/parsers/stac_color_scheme/stac_color_scheme.freezed.dart b/packages/stac/lib/src/parsers/stac_color_scheme/stac_color_scheme.freezed.dart
index 1e734fb0..a46cbc9b 100644
--- a/packages/stac/lib/src/parsers/stac_color_scheme/stac_color_scheme.freezed.dart
+++ b/packages/stac/lib/src/parsers/stac_color_scheme/stac_color_scheme.freezed.dart
@@ -32,8 +32,8 @@ mixin _$StacColorScheme {
   String get onError;
   String? get errorContainer;
   String? get onErrorContainer;
-  String get background;
-  String get onBackground;
+  String? get background;
+  String? get onBackground;
   String get surface;
   String get onSurface;
   String? get surfaceVariant;
@@ -187,8 +187,8 @@ abstract mixin class $StacColorSchemeCopyWith<$Res> {
       String onError,
       String? errorContainer,
       String? onErrorContainer,
-      String background,
-      String onBackground,
+      String? background,
+      String? onBackground,
       String surface,
       String onSurface,
       String? surfaceVariant,
@@ -233,8 +233,8 @@ class _$StacColorSchemeCopyWithImpl<$Res>
     Object? onError = null,
     Object? errorContainer = freezed,
     Object? onErrorContainer = freezed,
-    Object? background = null,
-    Object? onBackground = null,
+    Object? background = freezed,
+    Object? onBackground = freezed,
     Object? surface = null,
     Object? onSurface = null,
     Object? surfaceVariant = freezed,
@@ -317,14 +317,14 @@ class _$StacColorSchemeCopyWithImpl<$Res>
           ? _self.onErrorContainer
           : onErrorContainer // ignore: cast_nullable_to_non_nullable
               as String?,
-      background: null == background
+      background: freezed == background
           ? _self.background
           : background // ignore: cast_nullable_to_non_nullable
-              as String,
-      onBackground: null == onBackground
+              as String?,
+      onBackground: freezed == onBackground
           ? _self.onBackground
           : onBackground // ignore: cast_nullable_to_non_nullable
-              as String,
+              as String?,
       surface: null == surface
           ? _self.surface
           : surface // ignore: cast_nullable_to_non_nullable
@@ -398,8 +398,8 @@ class _StacColorScheme implements StacColorScheme {
       required this.onError,
       this.errorContainer,
       this.onErrorContainer,
-      required this.background,
-      required this.onBackground,
+      this.background,
+      this.onBackground,
       required this.surface,
       required this.onSurface,
       this.surfaceVariant,
@@ -450,9 +450,9 @@ class _StacColorScheme implements StacColorScheme {
   @override
   final String? onErrorContainer;
   @override
-  final String background;
+  final String? background;
   @override
-  final String onBackground;
+  final String? onBackground;
   @override
   final String surface;
   @override
@@ -624,8 +624,8 @@ abstract mixin class _$StacColorSchemeCopyWith<$Res>
       String onError,
       String? errorContainer,
       String? onErrorContainer,
-      String background,
-      String onBackground,
+      String? background,
+      String? onBackground,
       String surface,
       String onSurface,
       String? surfaceVariant,
@@ -670,8 +670,8 @@ class __$StacColorSchemeCopyWithImpl<$Res>
     Object? onError = null,
     Object? errorContainer = freezed,
     Object? onErrorContainer = freezed,
-    Object? background = null,
-    Object? onBackground = null,
+    Object? background = freezed,
+    Object? onBackground = freezed,
     Object? surface = null,
     Object? onSurface = null,
     Object? surfaceVariant = freezed,
@@ -754,14 +754,14 @@ class __$StacColorSchemeCopyWithImpl<$Res>
           ? _self.onErrorContainer
           : onErrorContainer // ignore: cast_nullable_to_non_nullable
               as String?,
-      background: null == background
+      background: freezed == background
           ? _self.background
           : background // ignore: cast_nullable_to_non_nullable
-              as String,
-      onBackground: null == onBackground
+              as String?,
+      onBackground: freezed == onBackground
           ? _self.onBackground
           : onBackground // ignore: cast_nullable_to_non_nullable
-              as String,
+              as String?,
       surface: null == surface
           ? _self.surface
           : surface // ignore: cast_nullable_to_non_nullable
diff --git a/packages/stac/lib/src/parsers/stac_color_scheme/stac_color_scheme.g.dart b/packages/stac/lib/src/parsers/stac_color_scheme/stac_color_scheme.g.dart
index 9f69189b..54cd562a 100644
--- a/packages/stac/lib/src/parsers/stac_color_scheme/stac_color_scheme.g.dart
+++ b/packages/stac/lib/src/parsers/stac_color_scheme/stac_color_scheme.g.dart
@@ -25,8 +25,8 @@ _StacColorScheme _$StacColorSchemeFromJson(Map<String, dynamic> json) =>
       onError: json['onError'] as String,
       errorContainer: json['errorContainer'] as String?,
       onErrorContainer: json['onErrorContainer'] as String?,
-      background: json['background'] as String,
-      onBackground: json['onBackground'] as String,
+      background: json['background'] as String?,
+      onBackground: json['onBackground'] as String?,
       surface: json['surface'] as String,
       onSurface: json['onSurface'] as String,
       surfaceVariant: json['surfaceVariant'] as String?,