Home-Manager applies my GTK3 theme to GTK4

Hi, I’m trying to set my GTK3 theme to Colloid-Dark-Catppuccin and my GTK4 to be the default libadwaita dark theme using Home-Manager. However, when I set these options:

    gtk = {
      enable = true;
      theme = {
        name = "Colloid-Dark";
        package = pkgs.colloid-gtk-theme;
      };
      cursorTheme = {
        package = pkgs.gnome.adwaita-icon-theme;
        name = "Adwaita";
      };
      iconTheme = {
        package = pkgs.papirus-icon-theme;
        name = "Papirus-Dark";
      };
    };

Despite the gtk.nix telling that it’s going to use the Colloid-Dark theme only for GTK+2/3, it is applied also to my ~/.config/gtk-4.0/settings.ini.

I’m using the latest version of nixpkgs-unstable and home-manager. Here is my config for further details: tomkoid/nixos-config: My NixOS config - Codeberg.org.

How else can I explain this to achieve the desired outcome?