What is the main role of the Theme Editor in Mendix Studio?

The main role of the Theme Editor in Mendix Studio is to customize the app's styling and appearance. This tool allows developers to modify the visual aspects of an application, such as colors, fonts, layouts, and overall design elements. By using the Theme Editor, developers can ensure that their applications not only function well but also provide a cohesive and appealing user experience that aligns with branding requirements or user preferences.

By focusing on styling and appearance, the Theme Editor plays a crucial role in the presentation layer of an app without involving any back-end logic, data models, or user permissions, which are handled by other components in the Mendix platform.