Hmm.. I'm not sure if I would like a black menu bar. I think it looks a little to 'Hackintosh' if you know what I mean. I personally like to keep things professional on my Mac, so I go for clean and slick. One thing I would definitely like for Apple to do is fix the translucency on the menu bar, and make it look better. The option doesn't really look good when you tile a picture or something along those lines. That's something I would be happy with.
you can, just set the invert menu bar option, and slide the dim when inactive slider all the way to the right. works great, except for fullscreen apps
make sure you're running v2.0 of nocturne. i have the option in my prefs.