[comex]

As a partially colorblind person (albeit easily capable of telling red from green here), while of course such a mode should not be required for programming, I wouldn't mind using it in general. The EnChroma glasses try to do this in real life, but they're expensive and only work in bright sunlight; if I can at least get the same for photos just by downloading something, it sounds interesting. (And probably already exists, so I should do some Googling.)