private void writeObject(ObjectOutputStream stream) throws IOException {
        stream.defaultWriteObject();
        SerialUtilities.writePaint(this.dialBackgroundPaint, stream);
        SerialUtilities.writePaint(this.dialOutlinePaint, stream);
        SerialUtilities.writePaint(this.needlePaint, stream);
        SerialUtilities.writePaint(this.valuePaint, stream);
        SerialUtilities.writePaint(this.tickPaint, stream);
        SerialUtilities.writePaint(this.tickLabelPaint, stream);