Funky plugins for image processing

Hi,
I have not tried LESS yet, I am mostly looking for a solution for image processing, that is:

• Image maps:
  Automatic creation of image maps from single images, and use them as background images with background-position.
  LESS could generate the CSS for free.
• Gradients:
  Using a module like Imagene gradient generator, the code to use those images in CSS could be made more semantic.

Both of these problems suffer from CSS being not dynamic enough. A CSS preprocessor seems like the ideal complement.

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LESS does already support custom functions, using $less->registerFunction().
All we need to do here is to provide a hook to expose the $less object to modules that want to modify it.

I'm going to open a new issue for that.