bali10050
This comment section is a goldmine
You need first find out how do you want to style the website. You can use the devtools menu for that (F12). Then you need to create a userContent.css, and write your css there. I recommend writing your rules for given urls or url-prefixes like @-moz-document url-prefix(www.4chan.org){body{background: #111}} or @-moz-document url("www.4chan.org"){body{background: #111}} so it only has an effect on the websites you want to style.
uBlock or ReVanced
I have been using the one I use for 10 years, but the one you sent looks pretty good too. Being open source is a green flag for me too, when I started using mine there were no good open-source qr-readers, that's why I went with this one.
I recommend using a dedicated qr scanner instead of google lens, because even if it can scan qr codes, it isn't optimised for it. Sometimes it can't even detect a medium-sized qr code in a screenshot, and it looks like they haven't even implemented the full standard.
Here's a pretty good qr-reader I can recommend: https://play.google.com/store/apps/details?id=com.blogspot.aeioulabs.barcode
Usually, they use a light grey instead of white, so the text doesn't become overly bright, but not yellow, that's usually reserved for highlights or similiar effects, except when in „High contrast mode”, when they use yellow for text/outlines and black as a background
No, it's just a good to have. I have made this art-piece as a demonstration (it's a link to this post):
And here's me reading it without a problem:
Idk, I never managed to use above 5GB without launching a game.
Thanks!