> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tavus.io/llms.txt
> Use this file to discover all available pages before exploring further.
# Customize Conversation UI
> Experience a conversation in a custom Daily UI — styled to match your preference.
You can **customize your conversation interface** to match your style by updating Daily's Prebuilt UI.
Here’s an example showing how to customize the conversation UI by adding leave and fullscreen buttons, changing the language, and adjusting the UI color.
For more options, check the Daily theme configuration reference and Daily Call Properties.
### Customization Example Guide
In this example, we will use stock replica ID ***rf4e9d9790f0*** (Anna) and stock persona ID ***pcb7a34da5fe*** (Sales Development Rep).
Use the following request body example:
```sh theme={null}
curl --request POST \
--url https://tavusapi.com/v2/conversations \
--header 'Content-Type: application/json' \
--header 'x-api-key: ' \
--data '{
"replica_id": "rf4e9d9790f0",
"persona_id": "pcb7a34da5fe"
}'
```
Replace `` with your actual API key. You can generate one in the Developer Portal.
1. Make a new `index.html` file
2. Paste following code into the file, replace `DAILY_ROOM_URL` in the code with your own room URL from step above
```html {6-8,16-22} theme={null}
```
Start the application by opening the file in the browser.
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