How do I change the skin on the accordion

I want to change the skin. I use the constructor “new dhtmlXAccordion(“leftAccordion”,“dhx_skyblue”);” But I find the skin param only be some one which are defined by default, such as “dhx_skyblue” and “dhx_web”, etc. So if I want to use my skin, how do I do?

Please, mark, what is your common skin and what is your custom skin (what skin based on).
I.e. if you have all the project in a custom skin built in Skin Builder based on skyblue - you need to apply skyblue for all the components - and your app will take all color settings from dhtxml_custom.css for skyblue style