You can change the background color of your canvas to any desired color by following the steps below:
Step 1: Click Brand on the left of the screen

Step 2: Select the color of the background you desire in the Canvas Background section
You can change the background color of your canvas to any desired color by following the steps below:
Step 1: Click Brand on the left of the screen
Step 2: Select the color of the background you desire in the Canvas Background section