@fog, I’ll reply here since this thread is for Polar Gleam and I don’t want to clutter the other one 
I’ve added the day/night wallpaper and global theme for Polar Dusk.
Please pull or re-clone the latest code — I’ve made a few tweaks to the color scheme and Kvantum theme naming to make day/night switching work properly.
https://bitbucket.org/dirn-typo/polar-gleam/src/main/
At a high level, the main tweak was removing spaces from the color scheme name.
For the Kvantum theme, to enable automatic switching between light and dark modes, the theme name should follow this format (no spaces or hyphens):
ApaNamaApaNamaDark
I’ve already applied these changes to my Salju/SaljuDark themes (a modded version with slightly different light colors from Polar Gleam). Honestly, I didn’t expect anyone to be interested in Polar Gleam, so I just left it as-is 
