curvature colors

I'm modeling a very large object (approx. 50 meters in lenght).
When i want to control my curvature everything shows up black.

In Options => Document Properties => Modle Display curvare i change the curvature values, but after this everything stays black.

Anyone an idea how to change this to correct values?

 

I'm using SolidWorks 2025 SP3.0