I've tried dl'in this a couple of times, but only a couple of icons got themed. I'm not sure why.....
If you're trying to use the theme only file and applying it over stock CM, then that's probably why. I don't know why it is this way, but I was having the same problem, even after a complete data/cache wipe. I would recommend downloading the full ROM version of buuf as it works great.
If it isn't already obvious, I am currently using Buuf on 5.0.5.7. It looks fantastic, but IMO was not as complete as I would have liked it to be right out of the box through this port, so I took my (limited) skills and made some modifications. A good portion of them are not visible in my screenshots, as a lot of the changes were theming menu icons and whatnot within apps, but here you can see just some of the things I've modified. Click for larger pics:
Customized HelixLauncher1 (changed app handles, trash handles, background color, themed the search bar), Beautiful Widgets, Pure Calendar Agenda, Power Control Widget, and Genie Widget (all themed by me in order to create a more unified look). All changes were made through metamorph (except Beautiful Widgets, of course), as that is the extent of my knowledge in modding anything within the Android platform.