Only black and white picture showing up when using my dvd player?

The TV works fine with cable. When I use a dvd, the picture is only black and white. The sound is fine.

I am using the surround sound system with dvd player from LG: LHT854
http://www.lg.com/us/tv-audio-video/home-theater-systems/LG-home-theater-system-LHT854.jsp
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