The branding_theme.exe utility is used to manage and customize the themes for Plesk installations. A Plesk theme is a complete set of images and CSS styles that provide the visual appearance of the Plesk user interface. The Plesk appearance can be customized by redefining the styles and images of the theme. The custom themes can be created by using default theme package. The command used to view the list of installed themes is
branding_theme.exe --list
or
branding_theme.exe --l