Mapbox Studio is a powerful online tool that lets you design and customize your own map styles. You can start from a template or an existing style, then adjust colors, fonts, layers, and visibility to match your application's branding or specific data needs. Once you are satisfied with your customizations, Mapbox Studio provides a unique style URL for each map style you create or modify. This URL is what you use to apply your custom style to any Mapbox-powered map, including those in your React applications.

To use a custom map style in your React app, you first need to obtain the style URL from Mapbox Studio. After saving your style in Mapbox Studio, you will find the style URL in the share or publish options. The URL typically looks like "mapbox://styles/username/styleid". Copy this URL, as you will reference it in your React code.

When rendering a Mapbox map in React, you specify the style using the style property of your map component. Replace the default Mapbox style URL with your custom style URL to instantly update the map's appearance. This allows you to fully control the visual presentation of your maps, ensuring consistency with your application's design.

To reference a custom style URL in your React Mapbox component, follow these steps:

1. Create or select your custom map style in Mapbox Studio and copy its style URL;
2. In your React map component, locate the property where the style URL is set (often called style);
3. Replace the default style URL with your custom style URL;
4. Save your changes and reload your application to see your custom map style applied.

For example, if you previously used the default Mapbox Streets style, your code might look like this:

<Map
  accessToken="YOUR_MAPBOX_ACCESS_TOKEN"
  style="mapbox://styles/mapbox/streets-v11"
  ...
/>

To apply your custom style, update the style property:

<Map
  accessToken="YOUR_MAPBOX_ACCESS_TOKEN"
  style="mapbox://styles/yourusername/yourcustomstyleid"
  ...
/>

This approach ensures your React map uses the exact style you created in Mapbox Studio. Any future changes you make to your style in Mapbox Studio will automatically appear in your application as long as you continue referencing the same style URL.