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	    // read the sample tif file
            using (MagickImageCollection images = new MagickImageCollection())
            {
                Console.WriteLine("reading the tif file");
                images.Read("../../res/sample.tif");

                // there should be 8 layers. (not sure why the first layer is the tif image and the seccond seems invalid)
                // iterate through layers, replace layer 4 color with a new one
                Console.WriteLine("changing layer nr 4");
                var oldColor = System.Drawing.ColorTranslator.FromHtml("#FEAF5C");
                var newColor = System.Drawing.ColorTranslator.FromHtml("#00ff00");
                images[4].Opaque(MagickColor.FromRgb(oldColor.R, oldColor.G, oldColor.B), MagickColor.FromRgb(newColor.R, newColor.G, newColor.B));

                // try to re-build the original tiff file but with one layer changed
                //just to be sure we're creating a new collection to skip the first two layers
                using (MagickImageCollection newImages = new MagickImageCollection())
                {
                    // add layers to a new collection
                    Console.WriteLine("copying to new collection and write each layer");
                    int index = 0;
                    foreach (var img in images.Skip(2))
                    {
                        // just to be sure the layers look good we're going to save all as PNG
                        img.Write(string.Format("../../res/layer_{0}_.png", index));

                        newImages.Add(img);
                        index++;
                    }

                    // write the new collection to disc
                    Console.WriteLine("writing the new file...");
                    newImages.Write("../../res/sample_new.tif");
                }
            }