{

                int otherPixelStart = testPixelStart + (stride * i);

                result &= IsColorMatch(pixBytes[otherPixelStart], pixBytes[otherPixelStart+1], pixBytes[otherPixelStart+2], r, g, b);

            }

            if (!result)

            {

                WriteLog("Swatch slice at {0}, {1} failed to match", x, y);

            }

            return result;

        }

        unsafe private bool IsPossibleSwatchUpperLeft(byte* pixBytes, int x, int y, int stride)

        {

            int testPixelStart = (y * stride) + (x * 3);

            if (testPixelStart < stride)

            {

                return false;

            }

            bool result = true;

            int solidLowerLeft = testPixelStart + ((swatchHeight - 4) * stride);

            int solidUpperRight = testPixelStart + ((swatchWidth - 4) * 3);

            int solidLowerRight = solidLowerLeft + ((swatchWidth - 4) * 3);

            byte swatch_r = pixBytes[solidUpperLeft];

            byte swatch_g = pixBytes[solidUpperLeft + 1];

            byte swatch_b = pixBytes[solidUpperLeft + 2];

            // Check the other 3 corners of the swatch size for color match

            result &= IsColorMatch(swatch_r, swatch_r, swatch_r, pixBytes[solidUpperRight], pixBytes[solidUpperRight + 1], pixBytes[solidUpperRight + 2]);

            result &= IsColorMatch(swatch_r, swatch_r, swatch_r, pixBytes[solidLowerLeft], pixBytes[solidLowerLeft + 1], pixBytes[solidLowerLeft + 2]);

            result &= IsColorMatch(swatch_r, swatch_r, swatch_r, pixBytes[solidLowerRight], pixBytes[solidLowerRight + 1], pixBytes[solidLowerRight + 2]);

            if (!result)

            {

                return false;

            }

            // scan down the right and left sides

            for (int yOff = 1; yOff < (swatchHeight - 5); ++yOff)

            {

                int testPixel = solidUpperLeft + (yOff * stride);

                result &= IsColorMatch(swatch_r, swatch_r, swatch_r, pixBytes[testPixel], pixBytes[testPixel + 1], pixBytes[testPixel + 2]);

                testPixel += ((swatchWidth - 1) * (x + 3));

                result &= IsColorMatch(swatch_r, swatch_r, swatch_r, pixBytes[testPixel], pixBytes[testPixel + 1], pixBytes[testPixel + 2]);