Is there a way to show visual diff from a Mercurial Web Server?

Question

A Mercurial Server can be started up just by

hg serve

and going to

localhost:8000

but the diff is a text type of diff. I wonder if there is any way to get a visual diff right from the server (probably by clicking on a file or a changeset), the type of visual diff that is like on kdiff3 or Tortoise SVN diff. If it can be done, that should be quite cool.