TextInput doesn't repaint correctly when color property changes

import Qt 4.7

Rectangle {
    width: 200
    height: 200

    Text {
	id: myText
	text:"Hello World"
    }

    TextInput {
	id:myTextInput
	x:100
	text:"Hello World"
    }

    MouseArea {
	anchors.fill: parent
	onClicked: {
	    myText.color = "red"
	    myTextInput.color = "red" //Doesn't work, unless we uncomment the following two lines
	    //myTextInput.visible = false
	    //myTextInput.visible = true
	}
    }
}