This JS snippet brute forces everything to have a white background and black text. Should be able to paste it into your browser's dev console.
var el = document.querySelectorAll('*');
for(var i=0;i<el.length;i++){
el[i].style.backgroundColor = '#FFF';
el[i].style.color = '#000';
}
If you don't mind sharing, why does it make you physically ill? I've heard of people not liking it, but this is the first I've heard of an actual medical issue and I'd like to be aware of it when designing things.
funny - i never thought about using js, even though when i'm doing webapps, that's how i generate all my html and css. thanks ! and looks like google's official high-contrast extension will do this (i've been wary of using random extensions that do this since they get access to everything)
it's a form of photosensitivity, maybe similar to [this form of
epilepsy](https://en.wikipedia.org/wiki/Photosensitive_epilepsy). i also don't do great with 3D movies and if I don't have something concrete to focus on ~50 feet in front of me, I'm prone to motion sickness)
while i'm reading the dark mode text i'm generally ok, but when i look away i get scrolling almost-horizontal light-and-dark bars in my vision and extreme nausea for a few minutes, milder auras, cramping and nausea for several hours and don't feel "myself" for about a day. i've never been in a situation where it happened and I couldn't walk away (i'll either lay down or sit facing a blank wall) but I'm guessing I'd get what doctors diagnose as a concussion (i've had several triggered by similar things without evidence of impact)
i haven't gotten a medical diagnosis, but assume it's a combo of being capable of extreme focus (both intellectual and athletic) and being prone to electrolyte imbalance
on my best days, I can handle dark mode for a few minutes without symptoms. and over time I've had more and more "best" days (mostly through managing electrolytes) so possible that i'll eventually not have to worry about it
I appreciate both the query and the intent to act on the info :) Not only for this particular set of symptoms, but more generally - visual designers have wide audiences and it must make for an interesting and at times frustrating set of trade-offs
