polygon collider 2d componet is not the same like the support manual

there is no detail and alpha settings there.
I really needs these function or please let me edit the polygon my self.

was it because a pro feather

 

thats when you add a sprite to auto create the collider, to manually edit the collider, you have to press shift and hover the mouse over collider shape, and click on it to move or create vertices, command or i suppose control if windows, to remove vertices

i was the same, but in the documentation mentions about how to edit pressing shift

 

http://forum.unity3d.com/threads/210443-Create-from-sprite-missing

--Eric