updated project style guidelines

lib/theming/appTheme.dart

@@ -15,9 +15,7 @@ class AppTheme {
     }
   }
 
-  static bool isDarkMode(BuildContext context) {
-    return Theme.of(context).brightness == Brightness.dark;
-  }
+  static bool isDarkMode(BuildContext context) => Theme.of(context).brightness == Brightness.dark;
 }
 
 class ThemeModeDisplay {
@@ -25,4 +23,4 @@ class ThemeModeDisplay {
   final String displayName;
 
   ThemeModeDisplay({required this.icon, required this.displayName});
-}
+}

lib/theming/darkAppTheme.dart

@@ -10,4 +10,4 @@ class DarkAppTheme {
     ),
     primaryColor: marianumRed,
   );
-}
+}

lib/theming/lightAppTheme.dart

@@ -10,4 +10,4 @@ class LightAppTheme {
       foregroundColor: Colors.white
     )
   );
-}
+}