I'm doing the Blender Guru donut tutorial as I'm learning blender. I've texture painted my donut dough in brown but when I render it with cycles, it has a greenish tone.
Here is the project uploaded to OneDrive.
Here you can see the material preview

Here you can see the render preview

Here you can see the final render

I would appreciate some help very much. Thanks in advance!
P.D.: before starting this question I touched something (don't know what and now the background is white and everything "has more light" and the icing looks faker. How do I turn it back?