60 views and no replies, probably means no one knows for sure.
The BBS gold looks the same for the 08' and 08' STi wheels. I know, as I had both in my garage for a while.
I couldn't tell you if the color code is the same. They just appear to be the same.
On a side note, the Duplicolor gold wheel paint matches pretty close, but I wouldn't be able to tell you if it would be good for touch up, or not.
Good luck man.
Hopefully someone will post a definite answer.