Please check the following:
Check your playout device by replacing media type, channel or connecting another playout device to your screen.
Connect your playout device to another source input port (HDMI1, HDMI2...)
Check/replace your wiring especially if you are using the Component input.
Disconnect all playout devices from tour screen and open the OSD Menu. If there are still the wrong colors on your screen please contact ad notam's support.