cakephp $this->html->css,CakePHP - how to link html css helper to a different folder

Currently I'm using using this to load in css in my CakePHP project.

echo $this->Html->css('jquery-ui',null,array('inline' => false));

That is assuming that I'm putting my css file in a css folder.

However, I'm now thinking about moving my css that is needed for js libraries to the js folder instead. (i.e in js/lib/jquery-ui.js AND js/lib/jquery-ui.css). That way I don't have to keep track of 2 folders with the same structure.

How can I change where CakePHP's css helper to point to a different folder?

Or is that not a good practice what I'm trying to do. (i.e moving the plugin css to live in the same folder as the js)

Thanks,

Tee