GitHub has been rolling out a proper dark theme over the past week or so, and my feeds have been wall-to-wall with screenshots of it. After years of browser extensions and userstyles bodging the contrast, the official one is just there in the settings now, and it is fine. Genuinely fine. Which is the highest praise a dark theme can earn, because the job of a dark theme is to be unremarkable at two in the morning.
What strikes me is not the feature, it's the volume of reaction to it. Nobody got this excited about any of GitHub's larger structural changes this year. But change the background colour and the timeline lights up. I think that is honest, actually. The big platform shifts are someone else's roadmap. A dark theme is the thing you stare at all day, and a small daily irritation removed is worth more in lived experience than a grand feature you touch once a quarter.
I switched it on, spent twenty minutes deciding it was good, and then spent rather longer than I should admit going through every other tool I use to see which ones had a matching theme. That is the real cost of these releases. Not the feature. The afternoon you lose colour-matching your entire toolchain to it.