The following code ( in qdoc: .../Qt5.2.0/5.2.0-beta1/mingw48_32/doc/qtquickdialogs/qml-qtquick-dialogs-colordialog.html) works, but produces a wrong output.
The optput is always from the previews result.

import QtQuick 2.1
import QtQuick.Dialogs 1.0

ColorDialog {
id: colorDialog
title: "Please choose a color"
onAccepted:

{ console.log("You chose: " + colorDialog.color) Qt.quit() }

onRejected:

{ console.log("Canceled") Qt.quit() }

Component.onCompleted: visible = true
}