Gizmo and Grid Color Change

I was working on a level design.
Gizmo and Grid colors have changed…
For what reason it changed. Sorry for not asking you in detail what you did.
Is there an option to change the color of Gizmo or Grid?

Looks like you’re on the Cinematic Viewport, You can switch back to the Default Viewport like so :
image


Thank you for your answer.
I tried changing it as you told me, but it didn’t work out.