Can I restrict the color options on Mac?

[Graham Samuel]

If you script

  answer color

or

 answer color with "red"

etc on the Mac, you get the standard MacOS color palette, which has six different ways of showing colours (I'm British, it's 'colour' over here... but I digress). I would rather restrict the user's choice to one of the really simple options, the Apple colors. Is there any way of doing this still using the OS color picker, or do I have to roll my own?

TIA

Graham