title: List all SystemColors
body: <p>In Windows.Forms, I need to create a program which accepts any color and tries to find the corresponding system colors to it.</p>
  
  <p>I was not able to figure out how to loop through all Colors of the System.Drawing.SystemColors class - it's a class, not an enum or a List.</p>
  
  <p>How can I do this (some kind of reflection?)?</p>