How to add “Clear” button link against all attributes.

I want to add “Clear” filter link against all the attributes so that user can deselect all the filters for that particular attribute in one go.

Have a look at the image. I have added the link.

What I want is if the user clicks the “Clear” link against Colors attribute, all the selected filters get removed and so on. That’s it.

Thanks a lot.
Pankaj