We have a lot of resources for games, such as ROMs, marquees, artwork, control panel overlays, etc.
However, I'm not sure if such a list exists, but I'm looking for a place where games are listed, along with the colors of buttons used by the games. Control panel photos or drawings would also help. I'm a bit puzzled as to why the CPO graphics and CPO vendors don't list the buttons colors. It could be printed in the area for the button hole itself (hint).
Ex: Samurai Shodown = Red, Yellow, Green, Blue. Pulstar = Red, Yellow. Black Tiger = Red, Blue. Rygar = Red/Blue*.
* or was it Red/Yellow? I can't seem to find an official control panel, too many photos of what seems to be Rygar cabinet conversions.