Fixed checkbox coloring

lib/theming/lightAppTheme.dart

@@ -35,8 +35,7 @@ class LightAppTheme {
       color: marianumRed,
     ),
     checkboxTheme: CheckboxThemeData(
-      fillColor: MaterialStateProperty.all(marianumRed),
-      // visualDensity: const VisualDensity(horizontal: VisualDensity.maximumDensity),
+      fillColor: MaterialStateProperty.resolveWith((states) => states.contains(MaterialState.selected) ? marianumRed : Colors.white),
     ),
   );
 }