CTAN has a new package: sectionbox
LaTeX style file for putting fancy colored boxes around sections, subsections, and subsubsections, especially for use in posters, etc. Tested with IWIposter.cls, sciposter.cls, and article.cls. A manual and an example are provided. Current version 1.00, August 24, 2005.
See this package at http://tug.ctan.org/tex-archive/macros/latex/contrib/sectionbox/ . You may get a better network connection by using a CTAN mirror near to you; see http://tug.ctan.org/tex-archive/README.mirrors . Our service is supported by the TeX Users Group http://www.tug.org . Please join a users group; see http://www.tug.org/usergroups.html .
sectionbox – Create fancy boxed ((sub)sub)sections
Sectionbox is a LaTeX package for putting fancy colored boxes around sections, subsections, and subsubsections, especially for use in posters, etc. It was designed with the sciposter class in mind, and certainly works with that class and with derived classes.