Mintlify launches themes as part of its third Launch Week, offering three pre-configured themes: Quill, Prism, and Venus, with more to come. Themes enable users to transform the styling and layout of their documentation to fit their branding, allowing for a unique look that stands out from others.` `Mintlify's themes are customizable through a simple mint.json configuration file, which can be enabled by adding a single line of code with specific values such as "quill", "prism", or "venus".` `The themes are designed to cater to different brand styles and use cases, including minimalist, gradient, and utility designs.` `Users can get started with Mintlify's documentation tools by signing up for a free account on the dashboard and trying out the new features during Launch Week.