I have a 2002 Mitsubishi rear-projection HDTV (50 inch I think) that I purchased new the year it was released. For some reason I noticed both my SNES and Genesis display in black and white through the composite inputs. The newer systems I tried (PS2, PS3, Xbox, 360, Wii) all work fine.

At first I thought this was just a one-hit problem affecting only this specific TV since I've never ran into that with any other set. Last week I purchased an adapter to convert either s-video or composite signal to VGA for use with a computer monitor. After I got it hooked up it seems the same problem with the same exact consoles when using this adapter. Anything from PS1 and newer displays fine but both the SNES and Genesis are in black and white.

Has anyone else ever ran into this issue? What is it about these particular consoles that cause this?