// 6 Rgb, Log+Sin, Lightblue
        private Color GetColor6(int intIter)
        {
            double dblTmp1, dblTmp2, dblTmp3;

            dblTmp1 = Math.Abs(Math.Sin(Math.Log(Math.Pow((double) intIter + 50.0, 7.9))));
            dblTmp2 = Math.Abs(Math.Sin(Math.Log(Math.Pow((double) intIter + 100.0, 7.9))));
            dblTmp3 = Math.Abs(Math.Sin(Math.Log(Math.Pow((double) intIter + 150.0, 7.9))));

            return Color.FromArgb(255, 100 + (byte) (dblTmp1 * 155.0), 100 + (byte) (dblTmp2 * 155.0), 100 + (byte) (dblTmp3 * 155.0));
        }