If you’d like to customize your task and set a specific image to the task cover, open the task and add an image as an attachment.
Upload the image from your computer or choose from a shared image in the Workspace.
When you see the image appear in the task window, hover over it and click the icon on the far right to select “Make Cover”.
You can also customize the background of your Workspace by clicking the artist palette icon in the bottom left of the Workspace screen.
You can select from solid colors or images.
This can even be uniquely set for each Workspace view.