As of GNOME 47, which is now shipping on many distros including the latest Ubuntu release, modal dialogs have gotten a visual refresh which has not yet been reflected in this theme.
Example of the new dialogs:
Current firefox-gnome-theme dialogs:
If feasible, adopting the new style would improve the theme's integration in the larger desktop.
As of GNOME 47, which is now shipping on many distros including the latest Ubuntu release, modal dialogs have gotten a visual refresh which has not yet been reflected in this theme.
Example of the new dialogs:
Current firefox-gnome-theme dialogs:
If feasible, adopting the new style would improve the theme's integration in the larger desktop.