Agree with the need to modify the default table styling from Patternfly4, but I would like to suggest we keep our own bespoke styling minimal for the below reasons:

• we want to achieve a common look and feel with our UI to other Red Hat product UI's/ dashboards
• the implementation of Patternfly 4 by other teams has not yet begun (it's just ourselves, UXD, and maybe 1/ 2 other teams to my knowledge) so what the final common aesthetic will be yet is not yet known
• by keeping as close to the default Patternfly 4 styling we will reduce the possibility for future re-work