Since i3 is the underlying tiling manager that is used by regolith, the i3blocks package can also be used. However since the choice was made to use Xresources this package has been forked and i3xrocks was born (created by the regolith team).

i3xrocks is used to customise the navigation bar as seen in the introductory configuration examples. To find a more thorough guide how to do this go to the Change Bar Status indicators