PNG ICO ICNS MORE
Network & communications
Smooth
Oxygen
exclamation, Alert, Information
SteelBlue
128x128
PNG MORE
Signs & symbols
34aL volume 3.2 SE
Message, exclamation, warning
Tomato
24x24
UI
Function icons
exclamation, warn, warning
DarkGoldenrod
16x16
triangle, sign, Caution
Gold
48x48