neon, neon_files, neon_notes: use NcColors

packages/neon/neon/lib/src/theme/colors.dart

@@ -1,6 +1,4 @@
 import 'package:flutter/material.dart';
-
-import 'package:meta/meta.dart';
 import 'package:nextcloud/nextcloud.dart';
 
 /// [Color] constants which represent Nextcloud's
@@ -16,10 +14,24 @@ abstract final class NcColors {
   ///
   /// This color is only used at the users discretion.
   static const Color oledBackground = Colors.black;
+
+  /// Color of a starred item.
+  static const Color starredColor = Colors.yellow;
+
+  /// Color used to emphasise declining actions.
+  ///
+  /// Usually used in conjunction with [NcColors.accept].
+  static const Color decline = Colors.red;
+
+  /// Color used to emphasise accepting actions.
+  ///
+  /// Usually used in conjunction with [NcColors.decline].
+  static const Color accept = Colors.green;
 }
 
-@internal
+/// [UserStatusType] color mapping.
 extension UserStatusTypeColors on UserStatusType {
+  /// The color for the user status.
   Color? get color => switch (this) {
         UserStatusType.online => const Color(0xFF49B382),
         UserStatusType.away => const Color(0xFFF4A331),

packages/neon/neon/lib/src/utils/confirmation_dialog.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:neon/l10n/localizations.dart';
+import 'package:neon/theme.dart';
 
 Future<bool> showConfirmationDialog(final BuildContext context, final String title) async =>
     await showDialog<bool>(
@@ -10,7 +11,7 @@ Future<bool> showConfirmationDialog(final BuildContext context, final String tit
         actions: [
           ElevatedButton(
             style: ElevatedButton.styleFrom(
-              backgroundColor: Colors.red,
+              backgroundColor: NcColors.decline,
               foregroundColor: Theme.of(context).colorScheme.onPrimary,
             ),
             onPressed: () {
@@ -20,7 +21,7 @@ Future<bool> showConfirmationDialog(final BuildContext context, final String tit
           ),
           ElevatedButton(
             style: ElevatedButton.styleFrom(
-              backgroundColor: Colors.green,
+              backgroundColor: NcColors.accept,
               foregroundColor: Theme.of(context).colorScheme.onPrimary,
             ),
             onPressed: () {

packages/neon/neon/lib/src/widgets/image_wrapper.dart

@@ -3,7 +3,7 @@ import 'package:flutter/material.dart';
 class NeonImageWrapper extends StatelessWidget {
   const NeonImageWrapper({
     required this.child,
-    required this.color,
+    this.color = Colors.white,
     this.size,
     this.borderRadius,
     super.key,
@@ -16,7 +16,7 @@ class NeonImageWrapper extends StatelessWidget {
 
   @override
   Widget build(final BuildContext context) => ClipRRect(
-        borderRadius: borderRadius ?? BorderRadius.zero,
+        borderRadius: borderRadius,
         child: ColorFiltered(
           colorFilter: ColorFilter.mode(color, BlendMode.dstATop),
           child: SizedBox.fromSize(

packages/neon/neon/lib/theme.dart

@@ -1,4 +1,5 @@
 export 'src/theme/branding.dart';
 export 'src/theme/color_scheme.dart';
+export 'src/theme/colors.dart';
 export 'src/theme/dialog.dart';
 export 'src/theme/neon.dart';

packages/neon/neon_files/lib/neon_files.dart

@@ -17,6 +17,7 @@ import 'package:neon/models.dart';
 import 'package:neon/platform.dart';
 import 'package:neon/settings.dart';
 import 'package:neon/sort_box.dart';
+import 'package:neon/theme.dart';
 import 'package:neon/utils.dart';
 import 'package:neon/widgets.dart';
 import 'package:neon_files/l10n/localizations.dart';

packages/neon/neon_files/lib/widgets/browser_view.dart

@@ -283,7 +283,7 @@ class _FilesBrowserViewState extends State<FilesBrowserView> {
                   child: Icon(
                     Icons.star,
                     size: 14,
-                    color: Colors.yellow,
+                    color: NcColors.starredColor,
                   ),
                 ),
               ],

packages/neon/neon_files/lib/widgets/file_preview.dart

@@ -49,7 +49,6 @@ class FilePreview extends StatelessWidget {
                 );
                 if (withBackground) {
                   return NeonImageWrapper(
-                    color: Colors.white,
                     borderRadius: borderRadius,
                     child: child,
                   );

packages/neon/neon_news/lib/widgets/feed_icon.dart

@@ -17,7 +17,6 @@ class NewsFeedIcon extends StatelessWidget {
     final faviconLink = feed.faviconLink;
 
     return NeonImageWrapper(
-      color: Colors.white,
       size: Size.square(size),
       borderRadius: borderRadius,
       child: faviconLink != null && faviconLink.isNotEmpty