Top class, this is awesome!
I do have one suggestion, however.. The "Inherited" text color of the Style Manager is very similar to that of the "Customized" text color, and it is quite hard to tell the difference - and I'm 20, with pretty good vision and no color blindness. This is also a problem apparant on vBulletin's other default Admin CP styles, and I made a request for them to change this last month, whether they will or not is quite another story..
Anyway, here's what I've changed..
In
controlpanel.css, find 2 instances of:
Replace them with:
This ties in nicely with the green title bar of the Admin CP that you have used..