Comment 9 for bug 741804

Unity would need to use a different name for trash icon there, otherwise the monochrome icon will be used in nautilus/evolution/...

So, "user-trash" would be "user-trash-unity" (or whatever name Unity folks prefer) and to make sure there is a fall back if themes do not have the icon name "user-trash-unity" to use "user-trash".

We could just take a shortcut and fix this in Humanity by changing the icon. But that is not right, since we will have to revisit this issue when we start getting a new icon theme. So let's just do it right now itself.. ;-)