Workspace lighting prefs?

Hi folks-

I'm a bit stumped here - when i open someone else's part file (like McMaster) the part file has its own custom lighting and appearance which is normal.

However, when i select my custom Scene to switch back my workspace, the lighting direction appears to be flipped upside-down

or very bright and not how i set up my scene.  I have previously set up my own custom scene with lighting tweaks and backgrounds and use those every day.

How can i lock the light positions forever? I can't seem to locate a lighting pref save button.

Thanks for your time! - JD

SolidworksGeneral