1. Open a Qt Quick Application project using Qt Quick Controls 1.1.
2. Open the project's main.qml file.
3. Go to Design mode.
4. Drag a CheckBox or RadioButton item onto the canvas.
5. Toggle the checkboxes for "Checked" or "Focus on..." (By the way, what's this?).
   They don't indicate whether the respective setting is off by default or explicitly set to the unchecked state.

Other checkboxes, e.g. the one for "isVisible" turn blue when they are explicitly set. The checkboxes for Qt Quick Controls should do this, too.