The Yellow Box lives on in a way; Safari for Windows is very much based on a Cocoa runtime for Win32.
Safari even ships with some obviously named DLLs which can be used to link basic (non-UI, mostly) demo CoreFoundation-based apps out-of-the-box with the headers from OSX dropped into mingw.
I was trying to reverse-engineer the Safari DLLs enough to make GUI apps work a few years ago, but a combination of shifting priorities and a cease-and-desist letter from Apple led me to pursue other things instead.
I still have WebObjects 4.5.3 on my home machine installed (Windows XP). It's basically OpenStep for NT (YellowBox?) - it kind of works, but I haven't done much in it.
If I knew what I know today about Objective-C and OpenStep back when I was fighting with COM and Win32 in the 90s, I would have been a very enthusiastic Yellow Box/WinNT supporter.
Unless, of course, the poster meant the year to refer to the year in which the yellow box strategy took place, rather than the year the article was published. Then it would be 1997, not 2007.
Safari even ships with some obviously named DLLs which can be used to link basic (non-UI, mostly) demo CoreFoundation-based apps out-of-the-box with the headers from OSX dropped into mingw.
I was trying to reverse-engineer the Safari DLLs enough to make GUI apps work a few years ago, but a combination of shifting priorities and a cease-and-desist letter from Apple led me to pursue other things instead.