[FTWrath]

Im kind of addicted to this, not necessarily making cloud shapes but just messing around in general with it.
Find shapes in clouds and draw them online / Klowdz

Took a screen of what I did just now to show the different brushes colors, etc.
Very cool, only downfall is it registers your touch about an inch below where you press.

This one is pretty awesome also, html5 as well.
Canvas Cycle: True 8-bit Color Cycling with HTML5

[ericlc2]

That canvas cycle is awesome, nice find.