Tak dziwnie się chyba do tego zabierasz. Skoro znasz paczkę tu np.: xfce4-pulseaudio-plugin, to wyświetlić zawsze możesz jej zawartość z podaniem ścieżek. W systemach pacmanowych robisz to tak:
pacman -Ql xfce4-pulseaudio-plugin
Oczywiście to przykład pod xfce4-pulseaudio-plugin podkładasz dowolną nazwę paczki.
PS: Jeśli pamiętam, to gdzieś był cały zestaw ikon Win7 dla linuksa. Win10 i 8 są dostępne. Ba, była też cała paczka, która zmieniała środowiska na Gtk2 (nie wiem, czy również na Gtk3) na wystrój imitujący Win7 łącznie z tym ich Aero, czy jak to się tam nazywa. Nie wiem, czy jest ona jednak kompatybilna z obecną wersję xfce (ani też, nie wiem którą masz).
Xfce4 - 4.16.1-1
pacman -Ql xfce4-pulseaudio-plugin
xfce4-pulseaudio-plugin /usr/
xfce4-pulseaudio-plugin /usr/lib/
xfce4-pulseaudio-plugin /usr/lib/xfce4/
xfce4-pulseaudio-plugin /usr/lib/xfce4/panel/
xfce4-pulseaudio-plugin /usr/lib/xfce4/panel/plugins/
xfce4-pulseaudio-plugin /usr/lib/xfce4/panel/plugins/libpulseaudio-plugin.so
xfce4-pulseaudio-plugin /usr/share/
xfce4-pulseaudio-plugin /usr/share/icons/
xfce4-pulseaudio-plugin /usr/share/icons/hicolor/
xfce4-pulseaudio-plugin /usr/share/icons/hicolor/48x48/
xfce4-pulseaudio-plugin /usr/share/icons/hicolor/48x48/apps/
xfce4-pulseaudio-plugin /usr/share/icons/hicolor/48x48/apps/xfce4-pulseaudio-plugin.png
xfce4-pulseaudio-plugin /usr/share/icons/hicolor/scalable/
xfce4-pulseaudio-plugin /usr/share/icons/hicolor/scalable/apps/
xfce4-pulseaudio-plugin /usr/share/icons/hicolor/scalable/apps/xfce4-pulseaudio-plugin.svg
xfce4-pulseaudio-plugin /usr/share/locale/
xfce4-pulseaudio-plugin /usr/share/locale/be/
xfce4-pulseaudio-plugin /usr/share/locale/be/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/be/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/bg/
xfce4-pulseaudio-plugin /usr/share/locale/bg/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/bg/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/ca/
xfce4-pulseaudio-plugin /usr/share/locale/ca/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/ca/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/cs/
xfce4-pulseaudio-plugin /usr/share/locale/cs/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/cs/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/da/
xfce4-pulseaudio-plugin /usr/share/locale/da/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/da/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/de/
xfce4-pulseaudio-plugin /usr/share/locale/de/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/de/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/el/
xfce4-pulseaudio-plugin /usr/share/locale/el/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/el/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/en_AU/
xfce4-pulseaudio-plugin /usr/share/locale/en_AU/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/en_AU/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/es/
xfce4-pulseaudio-plugin /usr/share/locale/es/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/es/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/eu/
xfce4-pulseaudio-plugin /usr/share/locale/eu/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/eu/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/fi/
xfce4-pulseaudio-plugin /usr/share/locale/fi/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/fi/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/fr/
xfce4-pulseaudio-plugin /usr/share/locale/fr/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/fr/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/ga/
xfce4-pulseaudio-plugin /usr/share/locale/ga/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/ga/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/gl/
xfce4-pulseaudio-plugin /usr/share/locale/gl/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/gl/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/he/
xfce4-pulseaudio-plugin /usr/share/locale/he/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/he/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/hr/
xfce4-pulseaudio-plugin /usr/share/locale/hr/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/hr/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/hu/
xfce4-pulseaudio-plugin /usr/share/locale/hu/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/hu/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/hy_AM/
xfce4-pulseaudio-plugin /usr/share/locale/hy_AM/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/hy_AM/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/id/
xfce4-pulseaudio-plugin /usr/share/locale/id/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/id/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/ie/
xfce4-pulseaudio-plugin /usr/share/locale/ie/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/ie/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/is/
xfce4-pulseaudio-plugin /usr/share/locale/is/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/is/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/it/
xfce4-pulseaudio-plugin /usr/share/locale/it/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/it/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/ja/
xfce4-pulseaudio-plugin /usr/share/locale/ja/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/ja/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/kk/
xfce4-pulseaudio-plugin /usr/share/locale/kk/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/kk/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/ko/
xfce4-pulseaudio-plugin /usr/share/locale/ko/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/ko/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/lt/
xfce4-pulseaudio-plugin /usr/share/locale/lt/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/lt/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/ms/
xfce4-pulseaudio-plugin /usr/share/locale/ms/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/ms/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/nb/
xfce4-pulseaudio-plugin /usr/share/locale/nb/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/nb/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/nl/
xfce4-pulseaudio-plugin /usr/share/locale/nl/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/nl/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/oc/
xfce4-pulseaudio-plugin /usr/share/locale/oc/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/oc/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/pl/
xfce4-pulseaudio-plugin /usr/share/locale/pl/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/pl/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/pt/
xfce4-pulseaudio-plugin /usr/share/locale/pt/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/pt/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/pt_BR/
xfce4-pulseaudio-plugin /usr/share/locale/pt_BR/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/pt_BR/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/ru/
xfce4-pulseaudio-plugin /usr/share/locale/ru/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/ru/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/sk/
xfce4-pulseaudio-plugin /usr/share/locale/sk/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/sk/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/sl/
xfce4-pulseaudio-plugin /usr/share/locale/sl/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/sl/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/sq/
xfce4-pulseaudio-plugin /usr/share/locale/sq/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/sq/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/sr/
xfce4-pulseaudio-plugin /usr/share/locale/sr/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/sr/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/sv/
xfce4-pulseaudio-plugin /usr/share/locale/sv/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/sv/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/th/
xfce4-pulseaudio-plugin /usr/share/locale/th/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/th/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/tr/
xfce4-pulseaudio-plugin /usr/share/locale/tr/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/tr/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/uk/
xfce4-pulseaudio-plugin /usr/share/locale/uk/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/uk/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/zh_CN/
xfce4-pulseaudio-plugin /usr/share/locale/zh_CN/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/zh_CN/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/locale/zh_TW/
xfce4-pulseaudio-plugin /usr/share/locale/zh_TW/LC_MESSAGES/
xfce4-pulseaudio-plugin /usr/share/locale/zh_TW/LC_MESSAGES/xfce4-pulseaudio-plugin.mo
xfce4-pulseaudio-plugin /usr/share/xfce4/
xfce4-pulseaudio-plugin /usr/share/xfce4/panel/
xfce4-pulseaudio-plugin /usr/share/xfce4/panel/plugins/
xfce4-pulseaudio-plugin /usr/share/xfce4/panel/plugins/pulseaudio.desktop
Dzięki za powyższą instrukcję, przyznam że pierwszy raz ją widzę, nigdy wcześniej nie natrafiłem.
Co do "ikonkologii" w tym systemie to istniejące w necie paczki Win10/8 a także połowa Win7 mocno mieszają w systemie.
Dzieje się to od czasu tej większej aktualizacji Xfce z ubiegłego roku.
Od tamtej pory użycie skryptów ładujących potrafi system dosłownie rozjechać więc ja podmieniam ikony ręcznie.
Zauważylem też że od aktualizacji w grudniu jest problem z podmianą kursorów. System za groma nie widzi paczek i szczerze mówiąc, przekopując /usr/share/icons nie znalazlem kursorów które siedzą choćby w takim Manjaro. No nie wiem gdzie one są i w jakim są formacie.
Wracając do lokalizacji ikon o które zapytałem:
/usr/share/icons/hicolor/48x48/apps/xfce4-pulseaudio-plugin.png
tu podano dokładną ścieżkę czyli jest nazwa ikony z końcówką PNG oraz tu:
/usr/share/icons/hicolor/scalable/apps/xfce4-pulseaudio-plugin.svg
w przypadku SVG.
No i faktycznie tak jest, ikona istnieje tylko i wyłącznie tam gdzie podano jej pełną ścieżkę no i istnieje tylko w 2 plikach, PNG i SVG. SVG jest responsywne a PNG ma rozmiar 48x48.
Innych ikon nie ma i teraz zrozumiałem dlaczego gotowe paczki z internetu niczego nie podmieniają, ktoś po prostu uszykował paczki dla innej wersji Xfce.