Tiff Transparency Converted to White / Black

@Brad @ Roaring Mouse you were correct with pointing me toward "premultiplied" alpha. In the ImageMagic world this translates to "associated " alpha and can be implemented using the following in the command line.

magick in.png -define tiff:alpha=associated out.tiff

 The part that really threw me off is the fact that I use Magick.Net, which is a .NET wrapper for ImageMagick. It has a alpha function, that appears to do the same thing as the command line arguments, when in fact there is another method required.

//This will not set the tiff alpha to Associated / multiplied
imageMagick.Alpha(AlphaOption.Associate);

//This is the correct way to define tiff:alpha associated
var tiffWriteDefines = new TiffWriteDefines
{
    Alpha = TiffAlpha.Associated
};
imageMagick.Settings.SetDefines(tiffWriteDefines);