Mojo Design Icons
From WebOS Internals
Icons can be anything that quickly relates to an application. No text should be used and the icon will be resized for other uses so keep this in mind as you design your icon.
Icons should be 64x64, but try and contain most of it in a 56x56 space. The 4px border will make sure that the re-size of the icon does not give poorly anti-aliased edges.
Most applications have a circle in the background, it has been recreated and below.
(if anyone finds a better version or the real version overwrite it with the one above by clicking on it)
Enyo Toolbar Icons
For projects under WebOS Internals DNS it is recommened that they use the icon templates.