[Sprint]

Also check out http://colororacle.org/ , which is a FOSS tool for Windows, Linux and MacOS for CVD simulation.

[morsch]

I tried out a DirectX hack that could simulate color blindness in basically all 3d games. Very interesting. It also had a mode that moved the colors around to help color blind folks.

I can't find it anymore, but I did find another DirectX hack which at least has the assist feature: http://www.guru3d.com/files_details/sweetfx_shader_suite_dow...