Saw a lot of words here. Not a lot of examples. "Dark mode was one of the most requested features for Lighthouse. I refrained a long time from adding it because it adds additional work to every UI task." This reveals a lot about the regression in OSes. Way back in the early '90s, Windows provided a color-scheme editor. Users could set up any color scheme they liked, and all properly-written apps would inherit it and…
The color scheme editor actually worked quite nicely up until the release of Windows 2000 [0]. After that, Windows XP introduced the "Luna" visual style (Uxtheme.dll) with inflexible, hard-coded colors. Most software developers stopped caring about color palettes, and almost all applications started using hard-coded colors in their GUIs. They tested their apps with the few skins preinstalled with Windows XP: Blue, Olive Green, and Silver.