I have to agree with red, like others have said, it stands out and looks more professional. Plus, it looks better with the staff outfits (at least in my opinion)
I would love it if blue ears were released, but I don't really think they should. Blue ears could be for Hosts like in VMK, although I don't think that's really necessary, they could still wear red like the staff. Maybe blue could be a gift for being a community leader? They would be untradeable and optional to wear, they just help CLs stand out a little more. But I can see that causing problems, people saying it isn't fair/special treatment/etc.. I don't know.