Where to find the Yosemite traffic light icons? Where would I be able to acquire Yosemite's new "traffic light" icons? I have found the SystemAppearance.car file, but I do not know how to decompress .car files, or if the file even contains the icons.
.car file is special BOM file and the file specification is un-document by apple, this is simulator with Assert.car in iOS. 

I found an open source project ThemeEngine
PS: I don't test it anymore.