I am wondering if the light top bar is prepared for new UI3 and if I can change it back before I actually get the UI3. After all, it looks so ugly when light top bar meets deep tool bar.
The updated panels were intended to be tied to UI3. We’re still rolling this out slowly to the community, but in the interim, we’ve shipped a fix to ensure that you don’t see a mixed UI2/UI3 experience.
If you’re still seeing the mis-matched tab colors, please refresh and let us know if you continue to run into any further issues.
I’ve also merged your topic with another similar, existing one here in the community. We’ll continue to track this bug over there.