Perhaps I've gotten the nomenclature confused. I was referring to the Main portion of my Auctiva store, where I would see the blog, info about the store, the sidebar with my categories, navigational / bookmark buttons and the like.
I use a custom template for my eBay listings, and my store should be able to match the template I use as closely as possible for aesthetic / professional purposes.
I am NOT referring to the gallery that appears on my eBay listings that Auctiva provides... I'll deal with that as I must.
Currently, there's so little style selection for Store templates that I'm sorely tempted to just hand-code my own store system. No offense untended, it's just the truth.