There is a java app called Color Oracle that works on all platforms (http://colororacle.cartography.ch/ http://colororacle.cartography.ch/). Turn it on and choo

There is a java app called Color Oracle that works on all platforms (http://colororacle.cartography.ch/ http://colororacle.cartography.ch/). Turn it on and choose which color blindness to simulate. I'm color blind and when switching to protanopia, the colors on my screen don't actually change for me.