It’s been a long time coming, but I’ve finally implemented dark mode on 40Tech. I started working on this a few months ago, and it was my use of dark mode on iOS in bed at night that spurred me to take the extra couple of minutes and finish this off. It is tied to your system setting, rather than being a site-specific option. If you visit 40Tech with dark mode enabled on your system, you should see a darker version of the site. Future tweaks may be coming, as I’m not entirely thrilled with the color scheme.
Thanks to a tweet by Matt Bircher and a post from Andy Nicolaides at The Dent for pointing me in the right direction. My theme ended up being more complicated than I hoped, requiring a fair amount of tweaking.