unfortunataly the setgamma command can only set the intenity of each channel, there is no way to assign an individual color to a default RGB 24Bit Value. You can filter out one or 2 Colors, eg. show only the red colors, but that's all.
Maybe the easiest way would be to use BW-Textures. One could write a funtion that will clone a scene and create BW Versions of all textures on the fly...
Maybe the easiest way would be to use BW-Textures. One could write a funtion that will clone a scene and create BW Versions of all textures on the fly...