I just waded through all the discussions about the 2021-02 Rulset updates in the Laboratory, and it seems the topic of a graphical sidebar has been hotly debated - affected several Rulesets and Extensions. Unless something changes, I think we all have to live with the Theme_Bars_Starfinder.ext for now.
I will look at updating my latest changes (based on what msbranin's work) and release a new Theme_Bars_Starfinder.ext with just the necessary changes.