Change the blue hue when selecting text on pages with a dark background.

[Mr_Sala2]

It would be nice if the blue color when you select text on a website is darker on pages with dark mode (or that have a black background), since it is not very different what you select.

[Jon]

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.

[Agentvirtuel]

Hello

Maybe?
https://www.userchrome.org
https://developer.mozilla.org/en-US/docs/Web/CSS/::selection
If you'd like to test userContent.css

/* Make selected text gold on a red background */
::selection {
  color: gold;
  background-color: red;
}

You can paste CSS into this lightweight editor
https://www.userchrome.org/download-userchrome-css.html

Generate CSS file userContent.css

Others https://www.w3schools.com/colors/default.asp

If you modify the code, restart Firefox