The help in 4.6.5.BUILD-SNAPSHOT-2012-01-27 has the correct styles. What is missing is the header that links to the internal index page for the help, the online version of it, and the online release notes.
I'll attach screenshot of what the current build help shows, and a screenshot of a previous build that has the nav elements. The previous build that has the nav elements is 4.6.5.BUILD-SNAPSHOT-2012-01-23. At least right now, it is running at http://10.17.188.87:7080/