title: Are photoshop-like blend modes possible in HTML5?
body: <p>I want to put a red rectangular <code>&lt;div&gt;</code> element over my webpage so that it would look not only transparent, but also like blended in Photoshop’s Multiply mode.</p>
  
  <p>The <code>&lt;div&gt;</code> would have <code>position: fixed</code>, so the content below it would change quickly.</p>
  
  <p>Is that possible with any HTML5 / CSS3 / canvas / SVG trick?</p>