title: Any good source of explanatory documentation on ColorMatrix?
body: <p>I'd like to try using <a href="http://msdn.microsoft.com/en-us/library/system.drawing.imaging.colormatrix(VS.71).aspx" rel="nofollow noreferrer">ColorMatrix</a>, but am only able to find examples that convert an image to grayscale. And even then, they tend to be presented as a chunk of 'magic numbers' code with no explanation.</p>
  
  <p>Does anyone know of a 'tutorial' on how to use ColorMatrix? For example I'd be interested in converting a grayscale image to a color image, where white == transparent, and black = a solid color, with gray pixels somewhere in between. Could ColorMatrix do that?</p>