QmlDesigner.NodeInstances: Fix color reset value

There is the color property with the r, g, b, a sub properties.
Before this change we only saved the default of the sub properties.

Change-Id: I11d4b0ed83cf8469836099a4f65942d7e8c8d8a6
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>

share/qtcreator/qml/qmlpuppet/qml2puppet/instances/objectnodeinstance.cpp

@@ -808,7 +808,9 @@ QStringList propertyNameForWritableProperties(QObject *object, const QString &ba
             QQmlValueType *valueType = QQmlValueTypeFactory::valueType(metaProperty.userType());
             valueType->setValue(metaProperty.read(object));
             propertyNameList.append(propertyNameForWritableProperties(valueType, baseName +  QString::fromUtf8(metaProperty.name()) + '.', inspectedObjects));
-        } else if (metaProperty.isReadable() && metaProperty.isWritable()) {
+        }
+
+        if (metaProperty.isReadable() && metaProperty.isWritable()) {
             propertyNameList.append(baseName + QString::fromUtf8(metaProperty.name()));
         }
     }