This is Sara from J. Jill. Thank you for your question!
We take customer feedback and suggestions seriously, and will be happy to pass along your suggestion of using more brass toned hardware on our belts.
We also wanted to be sure that you’ve seen one of our current belts, the Leather Filigree Belt, which features a brass buckle. If you’d like to shop for the Leather Filigree Belt, enter item number BQ041E into the search field at the top of jjill.com.