check the colour managment, if you are opening the scene in maya 2016 and it was originally saved in an older version of maya the colour management will be turned of.
if you start a new scene and reference then the colour management will be turned on. Giving you something like the problem you have now.
From a readers' Q and A column in TV GUIDE: "If we get involved in a nuclear war, would the electromagnetic pulses from exploding bombs damage my videotapes?"