Composition Mode Color Scheme
The default colors for composition mode—that full screen, zen view that I pretty much live in—have changed to a dark background with lighter text.
Changing the Colors
The new color scheme is supposed to be easier on the eyes, but if you prefer white paper or a different background color, you can make those changes under File>Options>Appearance>Composition Mode, under the Colors tab.
Editor: Changes the color of the “paper.”
Text: Changes the text color.
Screen Background: Changes the background screen color (to the right and left of the “paper”). To add a background image instead of a color, go to Project>Project Settings>Background Images.