>A company I used to work for has an application that is sitting on over 10,000
>desktops. Assuming even 1% of people have serious vision problems that can be
>helped by having better control over an application's color, don't you think
>it was much cheaper to spend 10 days developing a facility to allow the user
>complete control over the color properties than to ask various clients to buy
>larger monitors (and better salesmanship too)?

How about the High-Contrast settings in the Display Control Panel?