I publish simple theme-engine for Zope3-sites. I use it for customize
GUI(and ZMI) of Zope3-sites through browser. It's dynamics skin and
local utitlity for theme storage.
1) you can change GUI of web-site (and ZMI) through web (on fly,
without restart server, and without Zope3-programming)
2) you can prepare theme and upload as tar.gz archive.
3) you can create few themes for one site.
Example: you can get design from www.oswd.org and create new ZMI through
web (without create Zope3-skin and without restart server).
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