Just acquired a used B/W plus reel with CRT monitor. Buyer said that the camera head was brand-new and it sure does look new. I was told that they no longer make black-and-white camera heads. Is there a way to tell whether or not I have a black and white camera head or color Head without having a color monitor? Do the black-and-white heads have a different number of LED lights? Thanks to all for any help you can offer.