I can't read dark themed stuff at all for any length of time, and my tolerance is getting worse as I get older. More and more sites seem to be going dark by default and many don't offer any way to switch it off.

If there's an exact opposite version of this extension, I'd love to see it. I've even tried looking quite recently, but any search for terms like dark/light theme tend to throw up nothing but results for making things dark, not light.

Tranquility Reader helps a lot, but I'd like something that focused more on colours than style, leaving the page design mostly intact.