But this isn't the girl's official colors though. They're grayest as a result of getting their cutie marks removed) In the front or main row, we have Elita-1, Windblade, Chromia, Arcee, Moonracer, and Firestar. In the back, (left to right), Green Light and Flareup.

It seems like an evil villain has invaded Ponyville and removed the cutie marks from Elita's squad. And they're brainwashed as well. Those smiles are not genuine smiles, they're the smiles they were forced to have, if they frowned, they get punished.