Black & White Picture, but color menus???

I have a Series 2, and within the past couple days, I've noticed that any TV coming out of the TiVo is Black & white, but the TiVo menu's are still in color. If I put the TiVo in standby, the passthrough RF gives me a color picture. It's also somewhat interrmittent, a show recorded yesterday evening was in B&W, but something that recorded this morning was recorded in Color, and now it's recording B&W again. I've rebooted it a few times, that hasn't helped. Any ideas? It's lifetimed so I want to save it, I don't want to loose the lifetime. Thanks

-nate

 

I'm using an S-Video cable. I can watch previously recorded material in color, just not some recordings as of lately.

 

I have a D*TV Sat Box using RCA. I have the coax hooked up being used as a pass through, I'll go into the setup and change to the coax and see if there's something different.

edit: i got my color back! I guess it's a bad S-Video cable. Thanks!