Interesting article; however, I think they've aiming at the wrong people - colour-blind friendly options do exist in some games; but shouldn't the call for this be aimed at the developers of graphic card drivers?
I'm not sure if it's possible, but obviously something implemented at that level so everything you play on your system was forced to use would be better than developers having to do game-specific options
Alternatively, there was a LCD Monitor produced a few years back, although obviously I have no idea about if this works and how well.
I think the other problem in forcing changes to happen would be the fact that colour-blind people are very much a minority, although with the stats saying 1 in 20 men in an industry that traditionally has been male-dominated - you'd think there would have been something over the years; perhaps it's just as games have become more graphically complex that the issue has come to the fore.
I'm surprised that Microsoft don't have requirements for such options given their commitment to accessibility in other areas.