I just received and tested my new Ex-3 yesterday and the LCD viewfinder image has a subtle but distinct yellowish hue. For example, if I white balance on a white object the recorded image and the externally monitored images look accurate but on the camera's lcd display it looks a bit warm. (I'm checking on a calibrated broadcast monitor as well as very color accurate plasma).
I tried resetting the camera to the default factory settings and playing with the color setting under the viewfinder menu and that didn't change the hue in the camera's LCD.
I called Sony service and the rep didn't have any suggestions beyond the factory reset and before shipping the camera back to B&H was wondering if anyone had any similar experiences or solutions. I'd hate to send the camera back only to find that the replacement camera had a similar "warm" LCD.