[Coco] Cartridges only play in B+W for some reason?

[Robert Gault]

haywire666 at aol.com wrote:
> I got a couple cartridges for coco 3 off ebay. Interestingly, they only work in black and white, and I have no idea why. I have never seen this in all my years of using cocos.
>
> The cartridges are predator and robocop I believe. Anyone ever seen this before or know if its fixable?
>
> Strange...
>
>
> Steven

Instructions from RoboCop
Turn on the system when the title screen, license, and copyright appear. "If you 
have a monitor other than RGB, press M on the keyboard to get color."

There is no mention of this in Predator but it works the same as the above.