This past weekend at the CSDC, Wyatt Lyon Preul and I presented a two-part talk about implementing themes in Community Server -- both what is available in CS2007 as well as what we're adding in CS2008.
We had an excellent turn-out and a lot of great questions (both during the presentation and one-on-one). It was great to meet with developers from all over the world and discuss their experiences, wants and needs in regard to implementing themes.
For those who could not attend the CSDC, videos of all (or at least most) of the presentations should be available in the coming weeks -- I'm not sure where they'll be, but I'll publish links here when they are available. Additionally, Kevin Harder blogged about the CSDC live... so you can get a good idea of what was happening by reading his report.
Below are the links to topics discussed in Wyatt and my presentation.
Please feel free to continue asking theme-related questions both here as well as on the Community Server forums.

Read the complete post at http://feeds.getben.com/~r/BenTiedt/~3/173380036/talking-about-community-server-theming-at-the-csdc.aspx