Short: … but Windows Vista SP2 16489 ThemeUI.dll, Shsvcs.dll have!

A reader that goes by the name DJxSpeedy was kind enough to smack me in the head and make me look at the two files involved in enabling third-party theme usage. They did change after all. Oops. You can now grab the freshly patched x86 and x64 binaries from the repository.

Thanks for the heads up, man.