rendo invertibile questa migrazione

admin_interface/migrations/0020_module_selected_colors.py

@@ -45,5 +45,5 @@ class Migration(migrations.Migration):
                 verbose_name="link selected color",
             ),
         ),
-        migrations.RunPython(default_link_selected),
+        migrations.RunPython(default_link_selected,migrations.RunPython.noop),
     ]