There is another ''trick'' that works on desktop using flags, not sure if this is possible in android but you can try:
chrome://flags/#enable-force-dark
It worked for me. But the images and the signature look weird in this mode. But it looks much better when I am reading or writing. I assume if I want to disable it, I can just follow the same instructions and disable it. Right? I was curious to check what YouTube would look like in this mode. It wasn't too bad. But I realized a note from each YouTube video which is
"Restricted Mode has hidden comments for this video."Whatever the reason is, I am gonna try this mode for a while and see if I face something wrong or if it works fine for me.