The Theme Designer is a standalone tool that allows you to modify and create new themes based on built-in DevExpress themes.
The following links provide more information on the Theme Designer for WPF:
Provides information on the WPF Theme Designer installation, updates, and settings.
Provides information on the visual elements, tools, and commands.
Provides information on how to create, edit, save, and implement an edited theme in your application.
Provides information on how to build and export themes created with the Theme Designer.
Provides information on how to import custom themes from the Theme Editor to the Theme Designer.
Provides information on how to upgrade your themes to a newer DevExpress version.
Provides information on how to edit your theme source files.
The WPF Theme Designer supports DevExpress WPF Controls v17.1.6 and later. Download the old version of the WPF Theme Designer to work with v17.1.2 and v17.1.5.