The spots on Neelix's arm doesn't go all the way up. Assuming it's a makeup error. You can see the spots stop abruptly when the scene almost ends when Neelix and Tom try to fool the Doctor with the terra nut con job in the mess hall.
When Dala was transported to the brig she had her fake com badge taken off, since she was transported directly to the brig it's not clear where that badge went.