PNG ICO ICNS MORE
UI
Pixel
Gnome icons
Installer, software, system
Gainsboro
32x32
manager, File, system
DimGray
Users, system
WhiteSmoke
system, Applications
Gray
Tango
Lock, screen, system
Black
system, out, logout
DarkGray
shutdown, system
Proxy, preferences, system
system, session, preferences
SteelBlue
system, preferences, windows
Installer, system
update, software, system
forum, system, Users
Utilities, monitor, system
DarkSlateGray
preferences, tools, system
Emblem, system