Hi, author here, thanks for your comments! I definitely understand that the alternatives seem to be better but in my case, as stated in the post, we are dealing with a very old design (that I didn't make by the way) where the two main solutions discussed here (invert, darkmode.js) don't work at all.
I'm not going to post screenshots but after a few tests, it just changes some elements but the overall design still needs to be redone, as dark, because many elements are "ignored" and not treated.
The only solution I see, as some of you wrote, would be to redone the design and make use of CSS variables. That will drastically reduce the amount of work to do to achieve a dark theme and the number of generated lines will be very small. I need to dig into this direction!
I'm not going to post screenshots but after a few tests, it just changes some elements but the overall design still needs to be redone, as dark, because many elements are "ignored" and not treated.
The only solution I see, as some of you wrote, would be to redone the design and make use of CSS variables. That will drastically reduce the amount of work to do to achieve a dark theme and the number of generated lines will be very small. I need to dig into this direction!