After doing some research, I retract what I said about the Syclone. I keep forgetting that they only sold the truck for 1991, and all of them were black except for 10 that were painted red for a partnership with Marlboro. There were 3 produced in 1992, two were white/gray and one black, however they weren't sold to the public. The Typhoon on the other hand was offered in multiple colors besides black.
Edit: Personally I don't think GM wussed out by offering other colors. Sure black looks cool on them, but IMO it's pretty lame having your vehicle look like everyone else's. The dark red and gray-green they offered on the Impala look cool, and the SS 454 looks awesome in red.