The canvas is the area outside your document when you zoom out and expand your document window. Usually, the canvas is gray; however, you can change it to any color you like. Right-click on the canvas, choose Select Custom Color, and you’ll see a Color Picker. Choose your color and the canvas will show that color whenever you choose Custom in that contextual menu. 

It gets even better. Whenever you tap the F key to cycle through the screen modes (there are three of them), you can set a different custom canvas color for each mode. This is good for maybe working with a gray canvas when you’re editing an image. Then go into the second screen mode for screen captures against a white canvas, as I do for this column and my books. Then you could set black for the third mode (Full Screen Mode) and use it for presentations.

This tip originally published in Colin Smith’s “Photoshop Tips” column in the June 2023 issue oPhotoshop User magazine.