private Color getPointColor(int i, int j, float min, float max) {

        int value = Math.round((currentValues[i][j] - min) / (max - min) * 255);

        int blue = value;
        int red = 255 - blue;

        if (blue > 255) blue = 255;
        if (blue < 0) blue = 0;

        if (red > 255) red = 255;
        if (red < 0) red = 0;

        return new Color(red, 0, blue);

    }