PNG ICO ICNS MORE
UI
Pixel
Fugue Icons
button, ui, toggle
WhiteSmoke
16x16
ui, button
invisible, radio, button
ui, button, radio
Gray
Smooth
Elegant Blue Web
button, Folder
SteelBlue
64x64
Gnome icons
button, Emblem, ok
DarkSlateBlue
32x32
Form, button
Black
24x24
Form, button, image
Snow
Function icons
google, button
48x48
File, bird, button
3D
Crystal Clear
Face, yellow, happy
Gold
128x128
button, Blue
CornflowerBlue