You should talk to someone who does stage makeup.
Personally I wouldn't get too wild just for your show. Its one thing to have your own "look", but if its distracting and makes you stand out instead of your physique, eh, not the right place to put the attention. I would go for whatever looks classy. Also remember that whatever color you get, you want to give it ennough lead time to fade to its "long term" color and also not be a shock color that hasnt' settled yet before the show.
For ex, 4 weeks before my show in May I got my hair colored w/ chocolate undertones and blonde highlights -- for 2 weeks I basically looked like a skunk until it all settled in a bit. And in the end I put it up so you coudlnt' really tell.
For any show I do in the future, I've now got 2 blond fall pieces that I will intend to use. If i need, I'll get my hair colored to match one of them better.