I like dark reader too, with the most gpu intensive mode and sepia it makes for some really good dark modes for most websites. And I’ve built dark mode css off of it as an inspiration.

Edit: the "Dynamic" (GPU) mode doesn't work on all sites. On HN I'll use Filter+ with the settings -20 brightness, contrast off, sepia +30, grayscale off.

While on Github I'll do -5, 0, +30, 0. Mainly just tweaking the brightness while having Sepia on most sites.