Can you swap the mustachey things on the Raven's between 2 Raven's so they are different color mustache things?
i think they're glued on so it'd make it difficult to do but technically the answer is yes.
If you look at the top where the rectangle is, i'm pretty sure that's the alignment stem meaning it is separate.
I'm not brave enough to test this but i wouldn't mind seeing the green mask on my black raven.....