title: Algorithm for Additive Color Mixing for RGB Values
body: <p>I'm looking for an algorithm to do additive color mixing for RGB values.</p>
  
  <p>Is it as simple as adding the RGB values together to a max of 256?</p>
  
  <pre><code>(r1, g1, b1) + (r2, g2, b2) =
      (min(r1+r2, 256), min(g1+g2, 256), min(b1+b2, 256))  
  </code></pre>