There is currently no help or any recommendations for accessibility improvements in the settings/add-ons, for people with color vision impairments. And if there are, they must be well hidden and buried under tools for impairment simulation for development.
I was honestly expecting there to be something like reshade, with it letting you do things like custom tone mapping as a post-processing effect. It could even be useful for everyone, since sometimes even people with normal color vision have difficulty parsing bad graphics, or reading text with unfortunate color choices.