Sky always blue and bright


I’m trying to create a night scene in my project, but the sky is always bright and blue.
The project is based on the ThirdPersonTutorial project.
If i make the same changes in another new blank project (moving the Lightsource and editing the skysphere) the sky acts as i want it too.

What Im getting in my main project:

What im getting with the same changes in my blank project:

The weirdest thing is that if i delete the sky sphere in my blank new project, everything goes dark. But if i delete the skysphere in my main project, only the start disappear and the colors remain the same. What am i doing wrong?

The atmospheric fog seems to add color to everything, if that helps at all.