Custom GTK3 Theme for Flatpak

The Interim Fix for Flatpak Theming

If you are familiar with Flatpak, you will know that unless there’s already a Flatpak package for the theme you are using, it will use the default GTK3 theme which makes your app stick out like a soar thumb. Unfortunately, Flatpak is at the same time is quickly becoming the choice of distribution method for many of my favorite applications like Geary