title: get single color values from argb number
body: <p>Im learning C# and the following problem im trying to solve is taking a number stored as a string and getting the a, r, g, b values.</p>
  
  <p>So i want to go from </p>
  
  <pre><code>string s = "4280427042";
  </code></pre>
  
  <p>to</p>
  
  <pre><code>int a = 255;
  int r = 22;
  int g = 22;
  int b = 22;
  </code></pre>
  
  <p>What is the best approach?</p>