After installing Jenkins 2.289.3 and uninstalling "Modern Icon" plugin, Jenkins is showing blue balls instead of green ones in (at least) runtime overview. (see screenshot below)
Jenkins should have a option to get green icons.
With "Modern Icon" plugin installed, the green icons from "Modern View" are shown.
(While in other places, the new icons in core "win"; this could be used as work-around for the moment)