Individual category listing styling

Hi All,

I would like to add specific corner badges for my products listed from specific hikashop categories via joomla menu link. How can I achieve this?
Example: I have a menu item listing all red cars, so I would like to add a corner badge or ribbon only for these products boxes: "REDS" to the hikashop_subcontainer div on the upper right corner for example.
Thanks in advance.

regards.