private void drawBullet(final GraphicsContext CTX, final double X, final double Y, final Paint COLOR) {
        double iconSize = 0.04 * size;
        CTX.save();
        CTX.setLineWidth(0.0125 * height);
        CTX.setStroke(getSkinnable().getSeriesStroke());
        CTX.setFill(COLOR);
        CTX.strokeOval(X - iconSize * 0.5, Y - iconSize * 0.5, iconSize, iconSize);
        CTX.fillOval(X - iconSize * 0.5, Y - iconSize * 0.5, iconSize, iconSize);
        CTX.restore();
    }