final - questions asked in final commit

That makes sense. I guess I was thrown off by the comment on the jQuery site (http://learn.jquery.com/plugins/basic-plugin-creation/):
>Notice that to use ```.css()```, another method, we use ```this```, not ```$( this )```. This is because our ```greenify``` function is a part of the same object as ```.css()```.

Why needn't ```$``` be used in their example?