As usually, copy this directory under the ~/.tkabber/plugins directory
so that you get a hierarchy like this:
  ~/.tkabber/plugins
  ~/.tkabber/plugins/stripes/
  ~/.tkabber/plugins/stripes/stripes.tcl

Restart Tkabber, to get the plugin loaded.

Consult the README file for the details about using this plugin.
Usually you'll want to set the stripes' color which can be done
either via XRDB (on Unix) or using Tk option database (on any
system).

