Need Multiplayer Help!!!!

Can someone plz help me? My problem is well, I have elite set as my prefered species and have the legendary edition armor on. When I play on multiplayer on a blue vs red-team thing, my guy shows as a red spartan with I think the armor I have selected from the Armory. Can someone please tell me how to fix this so my guy is a elite?

most playlists are spartans vs spartans where you can only play as one. there are some elite vs elite gametypes and spartan vs elite playlists where you can play as an elite.