- List of Buttons
    - value: "buttons"
    - type: <QList<int> >
- Last saved image path
    - value: "savePath"
    - type: QString
- Drawing color
    - value: "drawColor"
    - type: QColor
- Mouse visibility
    - value: "mouseVisible"
    - type: bool
- UI color
    - value: "uiColor"
    - type: QColor