Allow coercion of value types to string

import QtQuick
import QtQuick.Window

Window {
    id: root
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    property color myColor: "orange"

    Text {
        text: root.myColor
    }
}

Warning: /home/ulf/untitled1/main.qml:14:15: Cannot assign binding of type QColor to QString [incompatible-type]
        text: root.myColor
              ^^^^^^^^^^^^