Created attachment 42889 [details]
see libreoffice logo there. it has background and it make panel ogly!
i have my own theme on my Gnome 2.32.0. all icons there published without background. but only libreoffice systray icon have background and it make the default panel ogly.
i searched but didn't found where i can change this icon.
Using ArchLinux & Elgant Gnome Theme.
Recent artwork update seems fix the issue; the new icons have no background.