As far as I know, there are no hybrid beans in commercial cultivation, nor available from seed companies. Therefore, beans sourced from the grocery store are open pollinated, and are highly likely to grow true to type.
This looks like a picture from seeds trust.
I have been half way on a search to find a heirloom kidney bean that is a dark red. Haven't seen one yet but in grocery store so might for kicks spend $1.59 for a # of them here, and try sprouting maybe half a dozen to see if I can get them to sprout.