Did anyone manage to do this? I folowed the instructions at http://www.gamesx.com/rgbadd/rgbn64.htm and only pin 19 seems to give a signal. So I only got a green image on my screen. When I connect the other wired (blue end red) at the same time to pin 19, the screen goes black and white. It's a clear image tho, but no colors. Anyone got a hint??