I’m drawing the icons of my extension, and I want the style of it be consistent with the default theme.
Is there any .psd source file for reference?
You can find some psd here
Thanks, but I’m looking for the psd of Toolbar.png, the toolbar icons…
I’ve found the one of Windows 8 style:
https://bugzilla.mozilla.org/attachment.cgi?id=8490859
But actually I need the aero one, to let me know which are the colors used in gradient background, and how to draw the inner shadows. 
The guildline of styling it is also OK.