# Add color-mode images

If you're working in React, you can add an image with multiple, color-mode-specific versions that automatically changes with the color mode.
This capability is only supported in React code.

## Before you begin

Make sure you have the following:

- two versions (light and dark) of an image stored locally

## Prepare project for feature

To get your project ready for testing color-mode-specific images:

1. From the root of your project, create a new directory and React page.
  For example, `color-mode-images/index.page.tsx`.
2. Add your image files (at least two) to the directory you just created.
  Here's an example file structure:

  ```treeview
  your-awesome-project/
  ├── color-mode-images/
  │   ├── index.tsx
  │   ├── sun.png
  │   └── moon.png
  ├── redocly.yaml
  └── sidebars.yaml
  ```
3. Update the React page to render the images you added, as in the following example:

  ```javascript
  import * as React from 'react';

  import sunImg from './sun.png';
  import moonImg from './moon.png';

  export default function() {
    return (
      <>
        <h1>Color mode image testing</h1>
        <img src={sunImg} />
        <img src={moonImg} />
      </>
    )
  }
  ```

If you can load the page and images successfully, then you're ready to move on.

## Add dynamic image element

This feature works by providing an image element with a list image paths and conditions using the `srcSet` property.

To add an image that switches with color mode:

1. At the top of your React file, import the `Image` component from the core Redocly theme, as in the following example:

  ```javascript
  import * as React from 'react';
  import { Image } from '@redocly/theme/components/Image/Image';
  // ...
  ```
2. Create a single, comma-separated string that contains the images and the color mode it corresponds with.
  It should follow this pattern: `<image> <color-mode>, <image> <color-mode>`.
3. Pass the list of images and color-modes to the `Image` component using the `srcSet` property, as in the following completed example:

  ```javascript
  import * as React from 'react';
  import { Image } from '@redocly/theme/components/Image/Image';

  import sunImg from './sun.png';
  import moonImg from './moon.png';

  export default function() {
    return (
      <>
        <h1>Color mode image testing</h1>
        <Image srcSet={`${sunImg} light, ${moonImg} dark`} />
      </>
    )
  }
  ```

In this example, the image changes when users toggle between color modes.
You can see the working implementation below.
Try changing the color mode.

## Resources

- **[Customize color modes](/docs/realm/branding/customize-color-modes)** - Apply custom styling and CSS variables for different color modes or add new color modes
- **[Theme static assets](/docs/realm/customization/theme-static-assets)** - Learn to properly reference and organize static assets within your theme for reliable image loading
- **[Extend with code](/docs/realm/customization)** - Discover customizable components and customization options for your project