IDK if it's the same one I saw at the chinese plaza beside Michael's No Frills a few days ago or not, it has a grey/black trunk with the strip above the license plate still body colour.
Oh btw next time, there is a thread dedicated to GTA spotting, you can just post all your spotted things there so we don't clutter up the forum with all these new threads. Here is the link:
http://www.ft86club.com/forums/showthread.php?t=9745
Edit: Just realized firestorm was red... I honestly thought it was orange (hot lava)
so disregard everything except the spotted thread haha