I found a site with basic bodystyle production numbers, but not option-specific.
4th gen Firebird prod. #s
I can find more specific info on Camaros, but I don't know all the Firebird websites.
Here's the numbers on my SOM car, most rare color, one of 234
Camaro SS Coupe with 6-Speed:
3,512 units:
41U Onyx Black - 1,359
11U Light Pewter Metallic - 591
81U Bright Rally Red - 547
28U Navy Blue Metallic - 456
10U Arctic White - 325
<font color="red"> 71U Sunset Orange Metallic - 234 </font>