title: Conditional formatting -- percentage to color conversion
body: <p>What's the easiest way to convert a percentage to a color ranging from Green (100%) to Red (0%), with Yellow for 50%?</p>
  
  <p>I'm using plain 32bit RGB - so each component is an integer between 0 and 255. I'm doing this in C#, but I guess for a problem like this the language doesn't really matter that much.</p>
  
  <p>Based on Marius and Andy's answers I'm using the following solution:</p>
  
  <pre><code>double red = (percent &lt; 50) ? 255 : 256 - (percent - 50) * 5.12;
  double green = (percent &gt; 50) ? 255 : percent * 5.12;
  var color = Color.FromArgb(255, (byte)red, (byte)green, 0);
  </code></pre>
  
  <p>Works perfectly - Only adjustment I had to make from Marius solution was to use 256, as (255 - (percent - 50) * 5.12 yield -1 when 100%, resulting in Yellow for some reason in Silverlight (-1, 255, 0) -> Yellow ...</p>