I've taken an interest in making sure that developers have easy ways to make their VR experiences more accessible, especially given that a push for "immersion" may mean players will be forced to bring their disabilities with them into a virtual reality.
Game Accessibility Guidelines
is a fantastic site with what amounts to a well-organized checklist for the developer (ranging from basic to advanced) to make sure you're covering all the bases. Strongly recommend checking this site out!
Up first is colorblindness:
Color Blindness (color vision deficiency)
Colorblindness affects a very significant percentage of players. According to the above site, 8% of males have red-green colorblindness (protanopia/deuteranopia/protanomaly/deuteranomaly), and there are other variants as well. Wikipedia states that 7.5%-11% of the population have some form of red-green colorblindness
(which makes up 95% of all those affected by any form of color-blindness).
So, here is a colorblindness simulator for use in your Unity projects.
Color Blindness Simulator (.unitypackage)
To use, simply drop the SimulateColorBlindness script onto your camera(s) and configure a key you'd like to use for cycling through the many variants of colorblindness at runtime. I recommend running the game while in the Editor (as opposed to from a built executable) so that you can see the console message indicating which colorblindness mode you're looking at.
In the future, I hope to post more "helpers" of some kind, but please feel free to post here to point developers in the direction of other helpful tools.