in BI4, UI3 highlighted cameras with movement with a red square around them. In BI5 it has changed to blue. I have a monitor running in the living room and found that the old bright red catches my attention better late at night when I prefer to see movement around the place.

Is there any way to change this highlight colour back to red? I can't see any setting in UI3 for this.

Blue! It's Orange in UI3 on my system!

The V4 Green/Red has been replaced by 'Yellow/Orange' in the desktop program, and, by 'Orange' in UI3.