For marching, concert, orchestra...? For marching, seriously, no one will notice. It's either brass or silver. Get a solo. You'll stand out. For concert, you could do a number of things. But if you sound great, you'll have character regardless of the trumpet, though adding little things can help with appearances...get one of those clear plastic mouthpieces or something. For orchestra, you really don't need ... anything. How many trumpets are there?