Apply (adw-gtk3-dark) theme to Fractal flatpak?

I’m having trouble applying a dark theme to the Fractal flatpak.

Instead of using the Adwaita-dark gtk theme, I prefer to use adw-gtk3-dark, but I can’t seem to get it to apply to Fractal.

  • commands to apply adw-gtk3-dark:
gsettings set org.gnome.desktop.interface gtk-theme 'adw-gtk3-dark'
gsettings set org.gnome.desktop.interface color scheme 'prefer-dark'

The commands properly apply the theme to the system but not to Fractal, and using Adwaita-dark has the same problem. So I tried applying a flatpak override.

  • command to apply flatpak override for adw-gtk3-dark:
sudo flatpak override org.gnome.Fractal --env=GTK_THEME=adw-gtk3-dark

This removed the border radius from avatar images but did not apply the dark theme itself. However, using Adwaita-dark in the flatpak override command successfully applies the theme to Fractal.

  • command to apply flatpak override for Adwaita-dark:
sudo flatpak override org.gnome.Fractal --env=GTK_THEME=Adwaita-dark

But the avatar images are no longer round, and I don’t like the overall dark theme compared to adw-gtk3-dark.

So can anyone please help me either apply the adw-gtk3-dark theme to Fractal or modify the Adwaita-dark theme to become adw-gtk3-dark?

Thank you.

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