You to start using Flavours it's the only decent thing we have at the moment. For Nimbus? The resources from the Nimbus shell theme so I can take a look at them. We also *really* need white titlebar support on Flavours that's the most pressing thing. There's some open source code for a SIMBL plugin [link] that works but it comes with FUGLY window gradients that also get code injected into the OS. And lastly I'd need a copy of Nimbus that runs on mountain lion .
Aww, no insult meant Alex, it's just that they /really/ don't go with many widget styles and themes; it's nothing personal, they're fine with say, shades of grey or even the default windows; it's just with a theme like bexos or lumineux it gives an... interesting shall we say effect sometimes.
It seems the internet didn't convey my playful sarcasm. Anyway, I wouldn't suggest anyone uses Black-Mac-OS-X; I made it for Snow Leopard. Customizing window titlebar text colors would be very trivial if only the Flavours team just implemented it.