I don't know if it's too late to think about this - but is there any chance of getting a permit from the Fire Marshall? In venues I've worked in I show the Fire Marshall the safety precautions that will be taken, where the fire extinguishers are, who will operate them, where the ash cans are, and what the pattern of the flame will be onstage.
Is that a viable option at this point? If not, and everything else seems impossible at this point, just turn away with the match - or hide it with your hand. Keep in mind, the lighting is in reverse - so anything naturally bright would be black. When I performed in this show in high school we had a flicker lighting effect when matches were used - maybe that can help?