Userscripts.org

I want to be able to adjust the brightness of websites on firefox with either stylish or greasemonkey. I hate using the things that change the background and text color. I've tried them and it gets really boring after surfing multiple sites that all look the same colors as the others. For example: liquid night and blackify

I want something that will actually just dim the existing pages brightness or opasity by like 75%. Being able to edit the % in the code would be better.

Also I don't want it to darken images, just the website body, text, links, etc. It would be even better if it darkens the images though, but the images are regular brightness when you hover the mouse over them. I've seen a opacity changing code for this in the "Nightshit - eye care" code.

Is this even possible? only thing I can think of is to have the code change the furthest background color to black and have it change the opacity of everything else on the page, giving the apearance that evrything is darkened. OR have an overlaying black image on top the whole site, and adjust it's opacity which would adjust how bright things looked.

Best way I can describe things, I don't do coding, just basic edits to customize them. Can someone make this code or w.e it is to work with stylish or greasemonkey?

Thanks

This is a very good idea. I want something like this, too, for a long time.
For the time being, i just use "zap white backgrounds" from this page:
https://www.squarefree.com/bookmarklets/zap.html

I have no clue who to code something like this, though. But i can imagine, that such a script would have difficulties to distinguish between design graphics (light spacers, gradients, and wallpapers) and actual content graphics.

Hmm, I'm not sure if this is what you want but give it a go.

document.body.style.opacity = 0.2

I don't know how to write scripts, couldnt get it to work. ^