Assigning different skins to different instances of the same component

I made a new skin for a scrollbar, just changing the one found in HaloTheme.fla. I copied from the library the folder -containing the new skin- in my project’s library and everything seems to work.

My question is: how could I assign two different skins, for example, to two different scrollbars? Is there a way to convert that skin in a brand new component?

Thank you