umm, you're probably going to have a hard time finding something orange for your tux unless you do get the dumb and dumber kind, so I say just go with a plain black one with a nice vest. Black goes with everything. Get a fullbacked vest, halfbacks are uncomfortable and make you look like a waiter. I'd say a black or silver vest to keep it neutral and again, it matches everything. If you're going to rent, my cost (tux, shirt, pants, vest, shoes) was 135. corsage prices depend on what kind of flower and how many. They go anywhere from 10-20. Go to a florist, ask them for the prices, and decide. Since its just junior prom, I'd go with 1 or 2 roses (again, a classic, though you can get tulips and whatnot). Get a WRIST corsage, not the pin ones, because those are uber hard to put on without pawing at your date (though you may want to do this, up to you). Finally, color- its all about matching, so if its orange, I'd say red or white. Find some girl who knows your date's dress color for certain and ask her if red would match. If not, go with white- white matches everything.
hope this helps
EDIT: corrected spelling. pet peeve, sorry
