Still using Community Server 2007 - 2008.5?
Getben.com previously hosted the only full documentation for the Chameleon theming engine from Telligent Community Server 2007 through Telligent Community 6/Telligent Enterprise 3.
The interactive documentation is no longer available, however, I have exported a static version of the documentation and converted it to EPUB and PDF formats:
Community Server 2008.5 Chameleon Documentation (EPUB)
Community Server 2008.5 Chameleon Documentation (PDF)
For other documentation regarding Telligent products, please visit Telligent.com