So, not sure if that is the template that is found at this link:
Gloss Black Template - Zen Cart Plugins (zen-cart.com)
or if it is another.
Lot's of possible places that the "problem" could be and it depends entirely on the software package and its installation... I've seen software that added a call in the index.php file (horrible place to unnecessarily modify), I've seen where a query is run (might consider looking for instances of TABLE_TEMPLATE_SELECT or more simply template_select if the site doesn't use a DB_PREFIX and the software wasn't written to consider using it to begin with. Oh and the software that causes the change may be in yet another sub-directory outside the normal search path(s) of ZC making it even funner to play with.
I've downloaded the template from the above link and am going to at least take a quick look even though it is ancient as far as applicability and would need some serious upgrading to be compatible.
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