title: Multiple points/colors gradient on HTML5 canvas
body: <p>I would like to fill a shape on a html5 canvas with a gradient created from several differents colors at different positions, like on <a href="http://www.imagemagick.org/Usage/canvas/gradient_inverse.gif" rel="nofollow">this picture</a>.</p>
  
  <p>Do you have any ideas on how I could do that?</p>