- Project Window → activate the Overview Line (click Set up Window Layout on the toolbar, then check Activate Overview Line.)
- Preferences → User Interface → Custom Colors → Project Area Background: choose any light color background (I don’t like dark backgrounds so I chose a white background; Saturation 0 Brightness 100 for the record, but any other quite-light color will do);
Result: the Overview Line background is now white as well, and the rectangle that indicates the section of the project that is displayed in the Event Display is almost invisible.
Thanks.