PNG MORE
UI
Pixel
Bijou
lightning
Black
10x10
PNG ICO ICNS MORE
Fugue Icons
lightning, weather
DarkGoldenrod
16x16
PC 100 Icon Pack
electricity, brainstorming, lightning
DarkOrange
32x32
lightning, exclamation
lightning, Arrow
lightning, Minus
lightning, pencil
plus, lightning
BWPX
Database, lightning
WhiteSmoke
18x18
table, lightning, Database
Silk
weather, lightning
DarkGray
exclamation, lightning
Minus, lightning
pencil, lightning
disable, lightning
DimGray
lightning, plus
Application, lightning
CornflowerBlue
lightning, Database
Silver
Goldenrod
Add, lightning