Is it possible to use frammarket css styling ONLY on the store section?

I like all the options and styling of framemarket and am wondering if the following can be done?

On WordPress multi sit WPMU setup, each sub site can use other theme for regular page/post/home page, and at the same time, apply framemarket's css styling (product grid view, product detail view, etc.) only to the store section of the sub site.

Is it possible? How to do it?