The Diablo GT wasn't really street legal in the US, some were actually imported and were registered anyway, but I wouldn't want to get involved in any accident with it ...
As for the color coded front spoiler, take a look at the photo's and judge it for yourself, it sure looks different ...
The 'parking lot' of the first photo was actually a shot of a meeting in Japan, it is noteworthy that in Japan a lot of Lamborghini's were tuned.
regards