T=~/.local/share/themes
for f in $(cd $T/adw-gtk3/gtk-4.0 && find . -type f | sort); do
  cmp -s "$T/adw-gtk3/gtk-4.0/$f" "$T/adw-gtk3-dark/gtk-4.0/$f" \
    && echo "identical: $f" || echo "DIFFERS:   $f"
done