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Social media
Flat
Metro UI Dock
volume
SeaGreen
512x512
volume, Running, Not
Firebrick
DarkOrange
Crimson
Mute, volume
Chocolate
UI
Metro UI Icon Set
Files & folders
Smooth
FS Icons Ubuntu Light
Panel, high, volume
Black
zero, Panel, volume
volume, Audio, Panel
Panel, Audio, muted
Audio, Panel, volume
Panel, muted, Audio
volume, muted, xfce
FS Icons Ubuntu Dark
volume, Panel, Audio
volume, low, Audio
low, Audio, zero
blocking, volume, muted
Panel, medium, volume
Audio, volume, muted
xfce, Mixer, muted
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Glyph
Windows 8 icons
Up, volume
DarkSlateGray
26x26
volume, Down