> For the complete documentation index, see [llms.txt](https://docs.chat.ngo/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.chat.ngo/profile/theme.md).
# Theme
In the **Theme** section, users can customize the appearance of their ChatNGO interface by switching between different themes or following the system settings for appearance. Here is how you can modify these settings:
**1. Access Theme Settings**
* Click on your profile icon located in the bottom left of the platform.
* From the drop-down menu, click **Theme**.
**2. Choose Your Theme**
You have three theme options to choose from:
* **System**: The platform will automatically follow your device’s default light or dark theme settings.
* **Light**: The interface will be displayed in light mode, providing a brighter appearance.
* **Dark**: The interface will be displayed in dark mode, reducing eye strain and providing a more muted, darker look.
**3. Selecting a Theme**
* Simply click on the desired theme option (System, Light, or Dark) to activate it immediately.
Once you select the preferred theme, your interface will automatically update to reflect the changes. There is no need to save manually—the theme changes are instant.
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:
```
GET https://docs.chat.ngo/profile/theme.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.