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Desktop apps
Flat
Smallicons: logotypes
Message, Skype, Messenger
DeepSkyBlue
512x512
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Soft Social Icons
Contact, Skype, Classic
MediumTurquoise
48x48
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Appicns
Skype, appicns
513x513
Plex for Android
Skype
RoyalBlue
96x96
Circular icon set
Black
256x256
Metro UI Dock
Mirror, Skype
640x640