With the customer's permission, you can get direct access to remote customers' computers.
Young people today spend a lot of time using computers or laptops. That will make your eyes tired. Some of the ways that can help you improve this is to change the color of the screen used.
You can download and design as you like. The white screen will be suitable when you watch movies or play games.
In addition, setting a black screen will help your eyes be more relaxed and less stressed. Some options for you in Custom Screen,
What attracts people to screen sharing across devices with TeamViewer?