If you want to add your own custom theme to Vidyou, you can download the documentation from the link below.
You can access the theme documentation from this link.
When your Photoshop file is ready, send it to the Vidyou team and they will add your custom theme to your account.
If you do not have a design team, you can get design service from the Vidyou team. You can continue from this link to get a design service.