Help Needed Changing the Color of the Notes Background

Hello,

This seems like it would be an easy fix, but I can't seem to find out how. When I import a PowerPoint into Storyline 360 the Notes section is black. How can I change the color of the background to white.  I'm not talking about the notes section in the player, I'm talking about the notes section in Storyline.

Thanks for the help.

Steve