It never gets flagged..... I have a link to the two images.
Code:
        bool flag = true;
        Color firstPixel;
        Color secondPixel;

        int BadPixels = 0;
       
            for (int i = 0; i < firstImage.Width; i++)
            {
                for (int j = 0; j < firstImage.Height; j++)
                {
                    firstPixel = firstImage.GetPixel(i, j);
                    secondPixel = secondImage.GetPixel(i, j);
                    if (firstPixel != secondPixel)
                    {
                        int PixelRed = Convert.ToInt16(firstPixel.R.ToString());
                        int PixelGreen = Convert.ToInt16(firstPixel.G.ToString());
                        int PixelBlue = Convert.ToInt16(firstPixel.B.ToString());
                        int PixelRed2 = Convert.ToInt16(secondPixel.R.ToString());
                        int PixelGreen2 = Convert.ToInt16(secondPixel.G.ToString());
                        int PixelBlue2 = Convert.ToInt16(secondPixel.B.ToString());
                        int MaxRed = PixelRed + 5;
                        int LowRed = PixelRed - 5;
                        int MaxGreen = PixelGreen + 5;
                        int LowGreen = PixelGreen - 5;
                        int MaxBlue = PixelBlue + 5;
                        int LowBLue = PixelBlue - 5;
                        if (FirstOne == 2)
                        {
                            textBox1.Text = "Red1: " + PixelRed + " Red2: " + PixelRed2 + " Blue1: " + PixelBlue + " Blue2: " + PixelBlue2 + " PixelGreen: " + PixelGreen + " PixelGreen2: " + PixelGreen2 + "\r\n";
                            textBox1.Text += "MaxR:" + MaxRed + " LowR:" + LowRed + " MaxBlue:" + MaxBlue + " LowB:" + LowBLue + " MaxG:" + MaxGreen + " LowG:" + LowGreen;
                        }
                        FirstOne++;
                        if (PixelRed2 <= LowRed && PixelRed2 >= MaxRed)
                        {

                            if (PixelBlue2 <= LowBLue && PixelBlue2 >= MaxBlue)
                            {

                                if (PixelGreen2 <= LowGreen && PixelGreen2 >= MaxGreen)
                                {
                                    BadPixels++;
                                    textBox1.Text = "Red1: " + PixelRed + " Red2: " + PixelRed2 + " Blue1: " + PixelBlue + " Blue2: " + PixelBlue2 + " PixelGreen: " + PixelGreen + " PixelGreen2: " + PixelGreen2 + "\r\n";
                                    textBox1.Text += "MaxR:" + MaxRed + " LowR:" + LowRed + " MaxBlue:" + MaxBlue + " LowB:" + LowBLue + " MaxG:" + MaxGreen + " LowG:" + LowGreen;
                                    flag = false;
                                    break;

                                }





                            }









                        }



                    }
                }
            }

            if (flag == false)
            {
                return false;
            }
            else
            {
                return true;
            }
*The picture
http://www.mymobster.org/Theif7.bmp
*The picture I compare the first one to
http://www.mymobster.org/TheifA.bmp
P.S. I have turned off all auto-correcting settings on the webcam.