Welcome to Camaro5, Prospect20! The production(real) Rally Stripes are, as you said, on the hood and trunk lid only, not on the roof. The option is $395 installed at the factory (cyber gray & white only), or $470 (all colors) installed by the dealer.
You can check out prices for yourself here:
http://www.camaro5.com/forums/showthread.php?t=8239
Happy shopping!