Just had a Halo 2 match where my teammate was an Elite and he was colored Red and Blue at the same time. That's actually a funny glitch, because the enemy team barely shot at him.
How many sleeps Frankie?
Not a glitch. You could do that in og Halo 2/H2 PC as well, it's due to how the primary/secondary colors were setup for team games, and the Elite's secondary color is so prominent they can end up looking like they belong on both teams.