title: Javascript: sepia or duotone image effects?
body: <p>Are there any reasonably easy to use JS frameworks/libraries for image effects, that would allow me to like converting an image (or part of an image) to b/w, sepia or duotone?</p>
  
  <p>Or, for example, that would allow me to overlap images and use blending modes like Screen, Multiple, etc?</p>
  
  <p>I tend to use jQuery, so a jQuery plugin would be ideal.</p>