This is an old post that i found on google. But i also found that when i used a S-video cable the reds look pink on BOTH TVs! However the picture was very sharp using the S-video. I even tried a 2nd s-video cable to make sure that the cable wasn't defective and i got the same result. Pink - reds! I did use a homebrew s-video also.
Hmmm...might be your TV as monitors can all be different in how they show colors, try adjusting for more color or saturation of color. Could be the game programming also. My Jaguar definitely shows pure red where it's supposed to, I'm using a Sony Trinitron CRT TV for my Jaguar. Is your on screen Jaguar Logo red? If so then what cart is showing red as pink?
Jaguar logo was PINK. I went back to the composite cable and the jaguar logo was a nice bright red. So that is why i thought maybe it was the cable. I should try to play with the saturation a bit. But i found it odd BOTH tv's had the same result. (although at the moment i have the jaguar in storage) I took a picture to show the guy i bought the cables from that i wasn't crazy. We exchanged cables and he tried the cables on his tv and said his jaguar logo was red. And the only thing he could do was offer a refund. In the end i just decided to keep it. I should get teh jaguar out again, and take that pic again to show people what im talking about. (almost tempted to pick up a offical s-video cable, to see if its the homebrew cable, but ihave my doubts)